Dialog boxes are too big
I installed MuseScore 3 on my laptop and met a problem. Dialog boxes are too big. Some dialogs, such as "mixer" and "create new score", exceed the bottom edge of the screen, which makes a few buttons unavailable.
MuseScore 2 does not have that problem because the dialogs are smaller. That's why I'm still using the previous version.
(About my laptop: The operating system is a Windows 10 64-bit. The screen size is 14". The resolution is 1920*1080, and the size of text, apps and other items is 150%, which are both recommended settings and ensure text and windows are properly displayed.)
I guess you have optimized the size of items in MuseScore 3 but apparently it is not suitable for all devices. Hope that you can provide a solution for this. Maybe you can consider rearranging some dialog widgets, or at least adding a scroll bar when necessary.
And thanks for your work!