Window periodically misdraws into a smaller area on startup

[dweymouth]

Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

Seems to only happen on Linux, and on Ubuntu 24.04 it happens up to 50% of the time, much more often than 22.04, according to Supersonic user reports. When this happens the window canvas also isn't responsive to mouse events at all.

I'm really tempted to mark this as a blocker since it is a huge negative to the UX of Fyne apps on Linux, at least on whatever distros are affected. Though manually resizing the window does fix it when it gets in this state.

How to reproduce

Launch a Fyne app on Ubuntu 24.04 until it shows up misdrawn

Screenshots

Screenshot from a Supersonic user:

Example code

n/a

Fyne version

develop

Go compiler version

n/a

Operating system and version

Linux (especially Ubuntu 24.04)

Additional Information

No response

[dweymouth]

I'll just share my incredibly hacky workaround here (which replaced my previous, ineffective attempt at a workaround) in case anyone else is affected: dweymouth/supersonic@2736fe9

I send a resize event through X11 shortly after the window is shown, so that if it ends up in the misdrawn state it will be forced out of it