Cursor flickers on helix editor when some UI elements are drawn

[dmbfm]

What Operating System(s) are you seeing this problem on?

macOS

Which Wayland compositor or X11 Window manager(s) are you using?

No response

WezTerm version

20250701-074723-54675c9c

Did you try the latest nightly build to see if the issue is better (or worse!) than your current version?

Yes, and I updated the version box above to show the version of the nightly that I tried

Describe the bug

In some situations, like when a completion popover/menu is drawn, the cursor flickers.

https://github.com/user-attachments/assets/e7b8ca75-e8d1-46e5-a450-342aa30978dd

To Reproduce

Open any file in helix. When a completion menu appears the insert-mode cursor will flicker.

Configuration

The only lines I believe would influence this issue are:

config.front_end = "WebGpu"
config.max_fps = 120
config.cursor_blink_rate = 0
config.animation_fps = 1

I have tried changing to OpenGL with the same result.

Expected Behavior

The cursor should not flicker as this does not happen in any other terminal I've tried.

Logs

No response

Anything else?

No response

[bew]

Have you tried with other any configuration? (except maybe the frontend)

[dmbfm]

I have tried to play around all these settings, max_fps, cursor_blink_rate and animation_fps but nothing worked. Is there some other setting that could affect this?