It seems very weird. I have tested with your project same issue. But I have tried with a similar project and it’s working fine. Could you please try with a new project and share your update?
Yes, with the new project it works fine.
I’m just not sure at which step it went wrong in the old project,
is there a way to copy elements/style from one project to another?
Sorry, there is no way. You can make a copy of the previous one but in this case, some other issues may occur. So for safe side better to design from scratch.
I had this problem too. As far as I remember, it happened when I added a Text ID Name that contained a symbol (I think it was °C). Maybe you’ve added something similar…