1256058 - All toolbarbuttons in Menu bar twitch: replace each other in cycles (once) when I enter/exit Customize

Status: NEW

(Firefox :: Toolbars and Customization, defect)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 48, 32bit, ID 20160312030405
STR:
 [read Note]
1. Place all toolbarbuttons in Menu bar, enable Menu bar, enable Bookmarks toolbar, disable Title bar
2. Open http://example.org/ in a new tab
3. Right-click Australis Menu button (≡), press "c" to choose "Customize..." menuitem.
4. Wait until "customize" transition is finished
5. Click Australis Menu button (≡) to exit Customize

AR:  All toolbarbuttons replace each other in cycles once. Just like <marquee> content
ER:  Toolbarbuttons should not twitch

Note:
 It happens even with 3 buttons in Menu bar, but I want STR to be reliable. Also, it's a
 good thing to have all buttons always accessible. I saw some users on Bugzilla do that.

Comment 1

[arni2033]

Attachment: screencast 1 - All toolbarbuttons in Menu bar replace each other in cycles.webm