Open Bug 1515331 Opened 6 years ago Updated 2 years ago

A flicker is displayed while changing between the "Default" and "Dark" themes


(Firefox :: Theme, defect, P5)




Tracking Status
firefox-esr60 --- unaffected
firefox64 --- wontfix
firefox65 --- fix-optional
firefox66 --- fix-optional


(Reporter: emilghitta, Unassigned)



(Keywords: regression)

[Affected versions]:
Firefox 64.0 (BuildId:20181206201918).
Firefox 65.0b5 (BuildId:20181217180946).
Firefox 66.0a1 (BuildId:20181217220100).

[Unaffected versions]:
Firefox 60.4.0esr (BuildId:20181203164059).

[Affected platforms]:
Windows 10 64bit
macOS 10.14.
Ubuntu 18.04 64bit.

[Steps to reproduce]:
1.Launch Firefox.
2.Click the “Hamburger” menu.
3.Click the “Customize” button.
4.Click the “Themes” button.
5.Click the “Dark” theme.

[Expected result]:
No visual issues are displayed after switching between themes.

[Actual result]:
A flicker can be seen on the URL area.

[Regression range]:
I have encountered 2 behaviors while searching for the regression. 

There is a more discrete flicker on the URL bar that was introduced by one of the bugs found in this generated pushlog:

The more visible flicker (shown in the provided screencast) was introduced by the bug found in this generated pushlog:

[Additional information]:
For further information regarding this issue, access the following link (in order to view the screencast):
Blocks: 1455924
Priority: -- → P5
Has Regression Range: --- → yes
Points: --- → 5
Severity: normal → S3
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