Settings: Theme previews display corrupted

Testing version:
2.0 (10984) on macOS 13.3.1

What were you doing:
Via the menu bar, Bear > Settings > Themes

What feature did you use:
Settings > Themes

What happened:
When you scroll down below Solarized Light and Dark themes, the previews of the themes are corrupted:

Thanks for reporting this glitch. Are you using an external monitor?

No, I’m using an iMac 27 (4.2 GHz Quad-Core Intel Core i7) with the built-in display.

I see this too!

But yes I use external monitors sometimes. And I usually see this corrupted previews after connecting to or disconnecting from external display(s).