969934 - Tab labels jump left and right when switching tabs

Status: NEW

(Firefox :: Tabbed Browser, defect)

Description

[Tim Taubert [:ttaubert] (inactive)]

Attachment: Screencast showing jumping tab labels

When switching tabs, the labels shift left and right. This is probably a recent regression?

Comment 1

[:Gijs (out for now; he/him)]

I suspect bug 878023.

Comment 2

[Dão Gottwald [:dao]]

should be fixed by backing out bug 878023

Comment 3

[Tim Taubert [:ttaubert] (inactive)]

This unfortunately isn't fixed for me. It should be in today's Nightly, right? I can easily reproduce this by filling a new window with lots of tabs and switching between tabs. All it takes are lots of tabs, it happens whether there is overflow or not.

Comment 4

[:Gijs (out for now; he/him)]

(In reply to Tim Taubert [:ttaubert] from comment #3)
> This unfortunately isn't fixed for me. It should be in today's Nightly,
> right? I can easily reproduce this by filling a new window with lots of tabs
> and switching between tabs. All it takes are lots of tabs, it happens
> whether there is overflow or not.

That's interesting. Is it reproducible on Aurora?

Comment 5

[Tim Taubert [:ttaubert] (inactive)]

This is not an Australis bug. It has always been that way, I suppose. This may be caused by the close button being shown when the tab is selected. Maybe we can address this sometime.