Open Bug 1988159 Opened 8 months ago Updated 2 months ago

Dropping tab group onto overflow count label causes unexpected behavior

Categories

(Firefox :: Tabbed Browser, defect)

Firefox 144
Desktop
All
defect

Tracking

()

Tracking Status
firefox144 --- affected

People

(Reporter: mercichao, Unassigned, NeedInfo)

References

(Blocks 2 open bugs)

Details

Attachments

(1 file)

Attached video record.mp4

Steps to reproduce:

  1. Drag a tab group from the tab list.
  2. Hover over the overflow count label of another tab group.
  3. Drop the dragged group onto the label.

Actual results:

  1. The drop indicator suggests the group will be placed at the end of the tab strip.
  2. Upon dropping, the group is indeed placed at the end. (However, due to bug #1985434, the group is actually inserted one item before the end)

Expected results:

It makes more sense for the indicator to target the right edge of the count label, aligning with the intended drop location for the dragged group.

Component: Untriaged → Tabbed Browser

I was able to reproduce the issue on Win11x64 using FF build 144.0a1(20250911162114) using steps from description.
Marking issue as new for engineering input. Thank you.

Status: UNCONFIRMED → NEW
Ever confirmed: true
OS: Unspecified → All
Hardware: Unspecified → Desktop

The severity field is not set for this bug.
:dao, could you have a look please?

For more information, please visit BugBot documentation.

Flags: needinfo?(dao+bmo)
Flags: needinfo?(dao+bmo) → needinfo?(sthompson)
Depends on: tabs-dnd, tab-groups
No longer depends on: tabs-dnd, tab-groups
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