Clutching at straws but I wonder if it’s dependent on Windows version and build? I’ve just checked with my old XP PC in the shed workshop, and there’s no problem.
This is Win 10 Pro 20H2 (19042.1348) with IDE 1.8.13
BTW, is it not possible to add a signature here, where that could be included? Failing any obvious method I tried the Web box but predictably simple text was rejected.