PDF Export takes wrong pagesize (letter instead a4)
Using Manjaro and the Musescore 3.0
Create a new score with pagestyle a4. then select export excerpts. The PDF you get is in letter format and you are missing the title.
trying to set back the musescore version to 2.0 didn't fix the problem. Also checking /etc/papersize say a4. So i use german language and keyboard layout. and nothing fixes the issue. It seems that musescore takes the wrong fileformat for output. But because of getting the issue also with the backrolled old version I guess this might be not a pure musescore problem. There might be a problem with a lib for getting the locale of the system.