333320 - Applying opacity to a tab changes order of tabs

Status: RESOLVED WORKSFORME

(Core :: Web Painting, defect)

Description

[Adam Kowalczyk]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060408 Firefox/3.0a1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060408 Firefox/3.0a1

When opacity is applied to a tab, it swaps places with the tab to its right. This only happens when changing the opacity from 1.0 to a smaller value and vice versa. It does not happen when changing between two fractional values.

See attached testcase.

Reproducible: Always

Comment 1

[Adam Kowalczyk]

Attachment: testcase

Comment 2

[Adam Kowalczyk]

Should've mentioned that it is a problem with all elements inside <tabs/>, not only with tabs.

Comment 3

[Dave Townsend [:mossop]]

Appears to switch position with the tab to the left of it. Also manually changing the opacity back to 1 or removing the setting for it does not change the tab back to the correct position.

Comment 4

[Nickolay_Ponomarev]

Also, the DOM is correct and this is not a recent regression, the same thing happens in 1.5.

Comment 5

[Adam Kowalczyk]

(In reply to comment #3)
> Appears to switch position with the tab to the left of it. 

Of course, sorry.

Comment 6

[Adam Kowalczyk]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b3pre) Gecko/2007121705 Minefield/3.0b3pre

The testcase works now.