https://bugs.winehq.org/show_bug.cgi?id=49597
--- Comment #2 from Davin Dittrich narfkeks@yahoo.de --- (In reply to Austin English from comment #1)
Please attach the terminal output.
Did this work in previous application/wine versions?
Is there a free demo/download available that shows this issue?
I unfortunately don't know how to attach or even read the terminal output, so I cannot help you there.
This link provides you with a trial version for 30 days, but I cannot say for sure that it has the same issue. It should, but I cannot guarantee it.
https://www.guitar-pro.com/en/index.php?pg=download&software=gp7demo
To create a file that does not work just open a new file and change anything in it, like adding a new note, working on the notations etc. you don't need any real knowledge on the program to do so. Just click into the notation, enter any number, safe the file, close the program and you got yourself a test subject.
By now I could verify that the same bug appears on the system of a friend which has the same software config (Wine 5.12-1, Guitar Pro 7.5.4 Build 1799).
Also, sorry for the very late reply