Closed Bug 202017 Opened 21 years ago Closed 21 years ago

Trunk crash pressing backspace [@ nsDocShell::QueryInterface] [@ nsDocShell::AddRef]

Categories

(Core :: DOM: UI Events & Focus Handling, defect)

x86
All
defect
Not set
critical

Tracking

()

VERIFIED DUPLICATE of bug 201822

People

(Reporter: jay, Assigned: aaronlev)

Details

(Keywords: crash, topcrash)

Crash Data

There was a spike in crashes with 4/12 MozillaTrunk builds for users pressing
backspace.  This might have been a result of a bad build, but just wanted to get
the bug logged for tracking.  I'll keep an eye out for any more crashes like this.

Here is the latest from Talkback:
nsDocShell::QueryInterface   35
		 50182 	 VERI 	 FIXE 	 oeschger@netscape.com 	 --- 	 2000-09-29 
BBID range: 19081078 - 19124736
Min/Max Seconds since last crash: 4 - 48447
Min/Max Runtime: 4 - 63056
Crash data range: 2003-04-12 to 2003-04-14
Build ID range: 2003040708 to 2003041308

Stack Trace: 

	 nsDocShell::QueryInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsDocShell.cpp]
	 nsWebShell::QueryInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsWebShell.cpp  line 277]
	 nsDocShell::GetInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsDocShell.cpp  line 381]
	 nsWebShell::GetInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsWebShell.cpp  line 305]
	 nsWebNavigationBaseCommand::GetWebNavigationFromContext
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 710]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 692]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line
695]     (19113148)	Comments: I pressed "backspace'
     (19112969)	Comments: I was composing an email message.  I had just entered
about 4 "to:" addressess.  I didn't want the last one  so I backspaced.  I
backspaced past the first letter of the email address  then I got the crash
     (19107716)	Comments: I press 'backspace'
     (19105969)	Comments: Pressed "backspace" in a popup window that had just
redirected to another page in the popup.
     (19100019)	Comments: hitting backspace to go back
     (19096630)	Comments: just installed  it started then crashed imediately
     (19090387)	Comments: I press 'backspace'
     (19090313)	Comments: I press 'backspace'
     (19089368)	Comments: I started a news message.  I added a second to: line.
 I pressed backspace to remove it.  Crash then occured.
     (19086834)	URL: http://www.npbs.co.uk/online/conditions.htm
     (19086834)	Comments: Pressed the Backspace key to go back a page
     (19086735)	URL: http://www.npbs.co.uk/online/conditions.htm
     (19086735)	Comments: I clicked on the "Back" button

==================================================================
nsDocShell::AddRef   22 
BBID range: 19081912 - 19124235
Min/Max Seconds since last crash: 31 - 47886
Min/Max Runtime: 67 - 51640
Crash data range: 2003-04-12 to 2003-04-13
Build ID range: 2003041204 to 2003041308

Stack Trace: 

	 nsDocShell::AddRef	[c:/builds/seamonkey/mozilla/docshell/base/nsDocShell.cpp 
line 292]
	 nsDocShell::QueryInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsDocShell.cpp]
	 nsWebShell::QueryInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsWebShell.cpp  line 277]
	 nsDocShell::GetInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsDocShell.cpp  line 381]
	 nsWebShell::GetInterface
[c:/builds/seamonkey/mozilla/docshell/base/nsWebShell.cpp  line 305]
	 nsWebNavigationBaseCommand::GetWebNavigationFromContext
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 710]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 692]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
	 nsWebNavigationBaseCommand::DoCommand
[c:/builds/seamonkey/mozilla/dom/src/base/nsGlobalWindowCommands.cpp  line 695]
 
 	Source File : c:/builds/seamonkey/mozilla/docshell/base/nsDocShell.cpp line : 292
     (19123345)	Comments: Presing backspace.  Mouse actions didn't trigger UI
     (19114854)	Comments: Used backspace to go back one page.
     (19114083)	URL: www.acer.com/us
     (19114083)	Comments: typed "4" for four times and it crashed.    was trying
to use the type and find function in Mozilla 1.4b.
     (19113221)	Comments: Crashed when I hit the Backspace key.  Focus was in
main browser area.
     (19109852)	Comments: backspace to go back
     (19103514)	Comments: Hitting backspace (to go backwards in browser history)
triggers a crash
     (19100264)	Comments: pressing back space
dup, recently fixed.

*** This bug has been marked as a duplicate of 201822 ***
Status: NEW → RESOLVED
Closed: 21 years ago
Resolution: --- → DUPLICATE
Status: RESOLVED → VERIFIED
Keywords: qawanted
Crash Signature: [@ nsDocShell::QueryInterface] [@ nsDocShell::AddRef]
Component: Keyboard: Navigation → User events and focus handling
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