690341 - Using the close tab option from the menu opens a new tab when dragging a tab

Status: RESOLVED INVALID

(Firefox :: Tabbed Browser, defect)

Description

[AndreiD[QA]]

Latest trunk ID: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20110929 Firefox/10.0a1
The issue is visible on Fx branches that have tab animation landed including Beta:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0

Steps to reproduce:
1. Launch Firefox on a clean profile.
2. Have at least 2 tabs open
3. Drag one tab out of the tab strip
4. While still holding the tab hit the alt+f shortcut to bring up the "file" menu and drag the tab on the option "close tab"

Expected result:
In step 4 the selection of the option "close tab" should not overlap the selection of the tab (mouse key hold)

Actual result:
In step 4, a new tab is opened.

*Notes:
-> This issue is present since the landing of the tab animation feature -> bug 455694 which means it's a regression if not an intended behavior
-> Is this blocking bug 455694? (see comment 304 in bug 455694)?
-> Here is a screen video of the issue: 
https://skydrive.live.com/?cid=bc75b2c6fced798f&id=BC75B2C6FCED798F%21350#cid=BC75B2C6FCED798F&id=BC75B2C6FCED798F%21351
-> I filed an enhancement bug to ask for disabling keyboard shortcuts while tab manipulation. IMO this would solve this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=689575

Comment 1

[Frank Yan (:fryn)]

Patch in bug 455694 was backed out.