2009401 - [Experiment] The pointer of the “Updated sidebar coming soon” callout message looks as overlapped by the Sidebar button when using RTL locales

Status: NEW

(Firefox :: Messaging System, defect)

Description

[Carmen Fat [:cfat] - Ecosystem QA]

Attachment: anchor arrow callout.jpg

[Affected versions]:

• Firefox RC 147.0 (Build ID: 20260105210555)

[Affected Platforms]:

• Windows 11 x64
• Ubuntu 24.04 x64
• macOS 15.1

[Prerequisites]:

• Have a Firefox 147 RTL build installed (e.g. “ar” or “fa”).
• Be enrolled in the “Old sidebar deprecation - Release” experiment.
• The “Updated sidebar coming soon” callout message was not triggered yet.

[Steps to reproduce]:

1. Open the browser with the profile from the prerequisites.
2. Navigate to a website.
3. Observe the arrow of the “Updated sidebar coming soon” callout.

[Expected result]:

• The arrow points to the Sidebar toolbar button.

[Actual result]:

• The arrow looks as if it is overlapped by the Sidebar button, OR it looks transparent when the button is moved on the right side of the Address Bar.

[Notes]:

• This issue seems to be reproducible only on Firefox RTL builds (e.g. “ar” or “fa”).
• Attached is a screenshot of the issue.