Why is rit. so big?
The default font for rit. (or ritard.) on this sheet I'm copying is just too big. See the size of the "rit." and "a tempo" on the right side (the pdf) and compare it to the ones on Musescore 4 on the left side.
The font for "a tempo" is customizable easily but for "rit". I don't know, I'm still looking for a workaround, maybe I'll just change the text for "a tempo" and make invisible tempo changes. What other options are there?