"Customize Toolbar" Menu breaks when sidebar is at minimum width

[sxgomez]

Captchas

• I have read the instructions.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.

What happened?

When using the "Customize Toolbar" menu, setting the sidebar width to its minimum value causes the UI to shift, making the upper portion of the window (including upper toolbars) inaccessible. This issue persists across different UI settings, profiles, and themes.

Steps to Reproduce:

1. Open Zen Browser and navigate to the "Customize Toolbar" menu.
2. Reduce the sidebar width to its smallest possible value, where the essential tabs condense into two columns.
3. Notice that the upper toolbars become inaccessible.

Expected Behavior:

• The UI should remain accessible, and reducing the sidebar width should not cause toolbars to become hidden.

Actual Behavior:

• The upper toolbars disappear from view and cannot be adjusted back into visibility. The only ways to restore them are:
  1. Widening the sidebar again.
  2. Using a sufficiently tall window (e.g., spanning multiple monitors or on a vertical monitor) to reveal the toolbars gradually.

3 columns (working normally):

2 columns (UI breaks):

Reproducible?

• I have checked that this issue cannot be reproduced on Mozilla Firefox.

Version

1.10.2b

What platform are you seeing the problem on?

Windows

Relevant log output if applicable

[zen-browser-auto]

Closing this issue as part of a repo cleanup

Due to technical-debt we had in the past, we are currently clearing out old, duplicate, stale, and non-actionable issues to improve issue tracking and make it easier to focus on fixing real bugs.

If this issue is still relevant, please open a new issue using our updated issue template, which will help us categorize and address it more efficiently.

Thanks for your understanding and for helping us improve the project! 🚀

This issue can be reopened at: https://github.com/zen-browser/desktop/issues/new?template=bug_report.yml&title=%22Customize%20Toolbar%22%20Menu%20breaks%20when%20sidebar%20is%20at%20minimum%20width%0A