598091 - Close an "untitled" tab and reopening it breaks the tab

Status: NEW

(SeaMonkey :: Tabbed Browser, defect)

Description

[Michael Kraft [:morac]]

With the preference set to show a blank tab at start up open a bunch of blank tabs.  Close these tabs (don't close the last one or browser will close).  Restore the closed tabs.  At this point the tabs will be broken and can't be closed or used.  

The following exception is thrown when trying to restore the blank tab from the closed tab list:

Error: uncaught exception: [Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIWebNavigation.goBack]"  nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)"  location: "JS frame :: chrome://navigator/content/tabbrowser.xml :: restoreTab :: line 1574"  data: no]

This then leads to other exceptions:

Error: this.mTabListeners[this.tabContainer.selectedIndex] is undefined
Source File: chrome://navigator/content/tabbrowser.xml
Line: 1011

Error: (void 0) is undefined
Source File: chrome://navigator/content/tabbrowser.xml
Line: 1627

Comment 1

[Philip Chee]

Does this still occur when you set |browser.tabs.max_tabs_undo| to zero?

Comment 2

[Michael Kraft [:morac]]

As far as I can tell it does not occur with browser.tabs.max_tabs_undo set to 0.

Oddly though it does store the "untitled" tabs in the closed tab list and they can be restored.  Actually it stored all closed tabs with max_tabs_undo set to 0 which also seems like a bug to me.