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”.
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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.