2026940 - In split tab view, when selected, the left pane is missing its right border.

Status: UNCONFIRMED

(Firefox :: Tabbed Browser: Split View, defect)

Description

[Gabriel Ladzaretti]

Attachment: Screenshot From 2026-03-27 15-03-03.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0

Steps to reproduce:

1. Enter split view
2. Select the left pane

Actual results:

The right hand border is missing when the left pane is selected.

Expected results:

A consistent border outline, as shown in the release notes, with a complete border like the right pane.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::Tabbed Browser: Split View' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.