Hi @Iver+Larsen,
I was able to reproduce this by changing the windows Font size settting to be very large.
This setting can be found under Ease of Access > Display. You can also find it by typing ‘text size’ into the windows menu, which brings up “Make Text Size Bigger”.
As you said, it causes problems with certain toolbars which seem to have a fixed height. If the translator does need that large text, you might try some of Windows’ other scaling options under Control Panel > Display. If Paratext comes out blurry, you might have to play with the Advanced Scaling options.