1445161 - The first window starts as inactive in Mac / Windows

Status: NEW

(Core :: Widget, enhancement)

Description

[Emilio Cobos Álvarez [:emilio]]

See this workaround:

  https://searchfox.org/mozilla-central/rev/99df6dad057b94c2ac4d8b12f7b0b3a7fdf25d04/browser/base/content/test/performance/browser_startup_flicker.js#30

And a similar one that bug 1439875 is going to introduce.

See also bug 1379355, which could be related.

Comment 1

[Florian Quèze [:florian]]

Do you think this is actionable? Looking at bug 2013670, it seems one of the workarounds broke recently. I wonder if we could fix the real issues instead of adding more workarounds.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

Possibly? I mostly use Linux, but it'd be good to know if there are some relevant logs to see where the focus event comes from.

Comment 3

[Florian Quèze [:florian]]

Here's a startup profile from my macbook: https://share.firefox.dev/3NW98HB On the profile we see there is an opacity transition on the toolbar when the first browser window appears.

Comment 4

[Florian Quèze [:florian]]

(In reply to Emilio Cobos Álvarez [:emilio] from comment #2)

I mostly use Linux, but it'd be good to know if there are some relevant logs to see where the focus event comes from.

Seems to reproduce on Linux too: https://treeherder.mozilla.org/jobs?repo=autoland&selectedTaskRun=OkMHqFPpT9yoMt9KN_3duQ.0&revision=9be64a20516cbebf3d7903f85831330648c9e1ad&searchStr=linux%2Copt%2Cbc But on Linux it's rare, on Mac it's close to a perma-fail.