Small bug(?) in the "Browser Appearance" window

OS: Windows 10
Anki: Version ⁨2.1.40 (cf446733)⁩

The font size in the “Browser Appearance” seem to mysteriously switch back and forth between size 6 and 12. Looks like a very small bug. Opening the window the first time gives me this:


And then closing the window and opening again:


Thanks, will fix.