Open Bug 2009565 Opened 8 months ago Updated 8 months ago

Animation glitch in Tab Stacking when dropping items at the end of the tab strip

Categories

(Firefox :: Tabbed Browser, defect, P2)

Firefox 148
defect

Tracking

()

People

(Reporter: mercichao, Unassigned)

References

(Blocks 2 open bugs)

Details

(Whiteboard: [fidefe-sidebar])

Attachments

(1 file)

Attached video 2026_01_10_20_11_57.mp4

Dragged items show a strange movement when they are dropped at the end of the tab strip.

Blocks: 1997322

Reproduced with Firefox 148.0a1 (2026-01-11) on macOS 15 and Windows 10.
Marking this issue as new for engineering input.
Thank you!

Status: UNCONFIRMED → NEW
Ever confirmed: true
Severity: -- → S3
Priority: -- → P3
Whiteboard: [fidefe-sidebar]

There's no immediate pressure to fix this right now, but would be good to get to it sooner rather than later to make this interaction feel smooth and polished.

Priority: P3 → P2
Blocks: tabs-dnd
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