2049278 - The AI tool Undo Closed Tab action disappears from the response if the user swithes tabs

Status: NEW

(Core :: Machine Learning: Frontend, defect)

Description

[Rares Doghi, Desktop QA]

Attachment: UndoGone.mp4

Found in

• Nightly 154.0a1 (2026-06-22)

Affected versions

• Nightly 154.0a1 (2026-06-22)
  Beta 153.0b3
  Release 152.0.2

Affected platforms

• all

Steps to reproduce

1. Enable Smart Window.
2. Have a Few tabs opened.
3. Ask in one of the tabs to close one of the other tabs.
4. Switch tabs and come back to the active tab.

Expected result

• The Undo Closed Tab Action should remain available.

Actual result

• The Undo Closed tabs action is no longer displayed in the response.

Regression range
N/A

Comment 1

[Nick]

For this bug please also look into chat restore https://bugzilla.mozilla.org/show_bug.cgi?id=2040449 , retry component is not coming up in nightly.

Comment 2

[BugBot [:suhaib / :marco]]

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

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