1499937 - Issue 1366060 "Tab moving/reordering animations should be disabled if toolkit.cosmeticAnimations.enabled=false" broken in 62.0.3

Status: RESOLVED WORKSFORME

(Firefox :: Tabbed Browser, defect, P5)

Description

[Charles Belov]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0

Steps to reproduce:

1. Launch Firefox with 30+ home page tabs 
2. Set toolkit.cosmeticAnimations.enabled=false
3. Quit and re-launch Firefox
4. Click > or < icon next to viewable tabs
5. Choose history menu item


Actual results:

4. Tabs animate in direction of arrow



Expected results:

4. Tabs redraw to direction of arrow without animating.

Comment 1

[Charles Belov]

Sorry, please ignore step 5; it's a separate but related issue.

Comment 2

[Peter_M]

This issue seems to already be in Bugzilla so I'm going to mark it as Resolved-Duplicate.
Thanks for reporting!

Comment 3

[Sam Foster [:sfoster] (he/him)]

This isn't the right dupe. Each animation needs to be explicitly written to observe the pref, so the fact that one feature works doesnt mean they all do and vice-versa. I have a feeling there is a dupe for this particular issue, but I can't find it. Moving component so we can triage it there.