So much of the new version does not work!!!
This new version is not ready for prime time!
For instance, I tried to move some staff text up a line in my score, but it jumped off the top of the page and disappeared!
For another thing, a line with some text in front can not be edited. They are in the toolbar, but I could find no way to change the character or number that is shown in the tool bar. And I can not find out how to add a string number below the staff.
Comments
I guess you are talking about system text ? If so, it's a known issue: https://github.com/musescore/MuseScore/issues/27101
On the list of issues to be resolved for the next version 4.5.1.
In the meantime, avoid the mouse, and use Ctrl/Cmd + Up/Down, Right/Left keys to move these system texts around. These untimely jumps will no longer occur (waiting for the fix).
"a line with some text in front can not be edited."
Can you attach an image of this use case?
"how to add a string number below the staff."
Use the shortcut "X" to flip the string number below the staff.
> "a line with some text in front can not be edited"
Try selecting the entire line (which includes the text). Open the Properties tab and inspect the Text tab. I believe that's where you should be able to edit the text that accompanies a line (perhaps depending on the type of line?).