Open Bug 1446452 Opened 7 years ago Updated 2 years ago

When opening a new tab, select the new tab at the same time as the previous tab gets deselected

Categories

(Firefox :: Tabbed Browser, defect, P3)

Product:
Firefox
Component:
Tabbed Browser
Type:
defect

Tracking

()

Tracking Flags:
Tracking Status
firefox-esr52 --- wontfix
firefox59 --- wontfix
firefox60 --- wontfix
firefox61 --- fix-optional

People

(Reporter: florian, Unassigned)

References

(Blocks 1 open bug)

Details

(Keywords: regression)

This is similar to bug 1444886. I already sometimes observed this on very slow machines, but now I'm able to catch this intermittently in a test when adding flicker coverage for the browser_tabopen_reflows.js test. The current behavior when we open a tab is: 1. Deselect the current tab 2. Start creating the space for the new tab with an animation, but the new tab isn't selected. 3. Show the new tab as selected, while it's still growing. This should happen in the same frame.
Blocks: async-tab-switcher
Keywords: regression
Priority: -- → P3
This likely isn't a recent regression, might even go all the way back to bug 1009628.
status-firefox-esr52: unaffected → wontfix
Severity: normal → S3
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