MuseScore 4.0 bugs

There are a lot of bugs in this new version. here's what I found:
1. pizzicato system is not working
2. piano keyboard system is not working
3. when I open now projects, the scores open on the new windows instead of new tabs
4. the system thinks I opened the projects a few days ago, eten though I just opened it a few minutes ago
5. just like the previous version, when I use external headphone, the system doesn't recognize it, so I have to restart the system
6. some minor bugs like underlined text. for example, "notes" with underlined "n" and "tuplets" with underlined "u"

I hope you guys fix those critical and minor problems on the next update. thank you.