Zen crashes when switching desktops with Aerospace in MacOS while extension dropdow is open.

[kater162]

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?

Zen will crash when switching between Aerospaces virtual desktops if the user had a zen extension dropdown menu open before switching away from the a virtual desktop that container an open zen window then trying to go back to the desktop that had the Zen window open.

This seems to have started after I upgraded Zen to v1.19.4b, previous behavior only had the extension dropdown menu close when returning to the virtual desktop which contained the browser window.

Expected behavior

Zen should not crash and extension menu should be closed.

Actual behavior

The whole browser crashes.

Steps to reproduce

1. Open a browser extension dropdown like DarkReader and trying to interact with some element inside it.
2. Using AeroSpace switch to a different virtual desktop.
3. Switch back to the desktop where Zen as previously open.

Screenshots and videos

2026-03-30.Zen.Crashing.mov

Version

v1.19.4b

What platform are you seeing the problem on?

macOS - aarch64

What component is this issue related to?

Extensions

Relevant log output if applicable

[kater162]

For reference Aerospace version is 0.20.3-Beta and I'm using macOS Tahoe 26.3.1 (a)

[mr-cheffy]

Maybe its an issue with aerospace?