Can't edit text if multi-monitor computer and Musescore is not on primary screen.
If you have multiple monitors and musecore is not on the primary monitor, then you can't edit text in titles and chords because the cursor gets drawn in the incorrect location. Therefore, you don't know which text you are deleting or changing.
This may seem minor, but I always work this way. All other software that I have ever tried does work on the either monitor.
For example: Create a score title. Try to edit it. When you type a letter, it appears in a completely different location than where you think the cursor is. Try to delete text, and the wrong letters will get deleted. You just can't edit the text if you are using the monitor that you purchased in order to edit large pages.