UI font size unexpectedly changed

[ppopoca]

Hi,

I copied formatted text from my web browser (Firefox ESR 128.5) and pasted it into my message being composed, I didn't even know I could paste with format. The issue is this text had a larger font than the WA window and, when pasted, the entire window font size increased as to fit the pasted text. And now, I can't find the way to reduce the font back to its original size.

Help, please.