Musescore 4 brings a lot of problems

From Musescore 4 I'm having problems on several issues. For example... changing font on chords seems impossible. Rarely it can be done but as soon as I modify one chord the font switches to the previous setting. Moreover, shortcuts for increase and decrease streching layout, absolutely necessary to go fast, don't work. I tried to modify them with no success. Who knows how many more issues I'll find keeping working on scores. MS3 worked so great. Version 4 is quite messy. I'm sorry. MS is a great app. Thank you