Horizontal Workspace Switching Occasionally Gets Stuck in Tabs View

[sai21-learn]

Preliminary Checks

• I have read and understood the important section above.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.
• I have checked that this issue cannot be reproduced on Mozilla Firefox.
• I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

When using Compact Mode in Zen Browser, horizontally swiping between workspaces occasionally causes the UI to get stuck in the workspace/tabs transition view. The interface appears frozen visually and the workspace switch does not complete properly.

This issue happens intermittently and is difficult to reproduce consistently.

Expected behavior

Swiping horizontally between workspaces in Compact Mode should smoothly transition to the selected workspace without the UI freezing or getting stuck.

Actual behavior

The UI occasionally becomes stuck in the tabs/workspace overview view after performing a horizontal swipe gesture to switch workspaces in Compact Mode. The transition does not finish correctly.

Steps to reproduce

Steps to reproduce*

1. Open Zen Browser
2. Enable Compact Mode
3. Open multiple workspaces
4. Use horizontal swipe gestures to switch between workspaces
5. Occasionally, the UI gets stuck in the workspace/tabs transition view

Screenshots and videos

2026-05-11_20-13-53.mp4

Version

1.19.12b

What platform are you seeing the problem on?

Linux (AppImage)

What component is this issue related to?

Compact Mode

Relevant log output if applicable

No relevant logs captured yet.

[Propheticus]

Please try with all mods disabled (also no Sine). I think that tab switch bounce animation could be involved.
(a quick way to test is via the menu > help > troubleshoot mode)

[sai21-learn]

disabled all mods and tried troubleshoot mode but the issue was still there . Its not happening every time i swipe but one of the 8times it is .

[Propheticus]

If this also happens in a clean profile (you can make one in about:profiles) without Sine, could you share the log journal (ctrl + shift + J) when you catch this?