The same thing happens to me.
I’ve tested your file and I have the same problem.
Furthermore, if you tray to add lyrics text, You’ll not see the modifications in real time.
But if you exit from score and re-enter you’ll see that the changes are there.
This issue is happening on my orchestral projects, with instrumental and vocal tracks, created ante 15.0.21 (I don’t know if this happens in 15.0.20 because I didn’t work on them in those 3 weeks.
- If I use on my secondary PC who has mounted 15.0.06, all is fine.
- If I create a new project in 15.0.21, alla is fine.
So I think that something has changed in last update.
I have sent a message with an example to mr. Stefan Fuhrmann, but this yours is a good file to test because it’s small.