Visual issues when switching between different fractional scaling in GNOME

[elvishcraftsman]

I have a laptop that I plug into an external monitor. My laptop is at 1.25 fractional scaling, and my external monitor is 1.00. I only use one at a time. When I unplug or plug in my laptop, most apps behave nicely, but ZapZap always doesn't. Attached is a sample of what can happen. To fix it, I need to maximize the window and then bring it to its normal size again.

[rafatosta]

I have no idea what it is!
Have you tried running at X11?