43428 - Tree auto-scrolling crashes in StopTracking()

Status: VERIFIED FIXED

(Core :: XUL, defect, P3)

Description

[Mike Pinkerton (not reading bugmail)]

Here's how to repro this:
- launch navigator with sidebar open to bookmarks
- open the bookmarks window
- drag a bookmark in the BM window quickly out of the window to the side and over 
something where the drop isn't allowed (a dos window is a good place). be sure to 
do this quickly since the bug is dependent on an event not being triggered.
- close the bookmarks window
- start a drag in the navigator sidebar. boom!

The reason for this is that the bookmark tree is not unregistering itself with 
the drag session because event capture does not correctly give us the 
notification that the mouse has left the window. This is probably because mouse 
capture does not work for drag events on win32 and linux (note, this works on 
macos because i know how to fix that). 

cc'ing rod because he knows how the mouse capture works on win32, and pav for 
linux.

Comment 1

[Mike Pinkerton (not reading bugmail)]

adding keywords, milestone, accepting.

Comment 2

[Jay Patel [:jay]]

Putting on [nsbeta2+] radar for beta2 fix. 

Comment 3

[Mike Pinkerton (not reading bugmail)]

this isn't going to make it for beta2, too many uncertainties. let's hold off for 
beta3.

Comment 4

[Jay Patel [:jay]]

Putting on [nsbeta2-] radar. Not critical to beta2. 

Comment 5

[Peter Trudelle]

adding nsbeta3+

Comment 6

[Mike Pinkerton (not reading bugmail)]

fix checked in. we no longer use capturing or timers or anything of the sort, so 
there's nothing to miss or not unregister and crash.

Comment 7

[John Morrison]

verified fixed mac/linux/win32 2000090508, for pink's steps to reproduce, above.