Mac & Win version 3.04 Plays Piano Only in GP files

Trying to post this again...seems to be error-ing out. If there end up being multiples of this, I apologize, but I am not seeing it in the forum.

If I open a GP file (gp3, gp4 or gp5) all of the instruments use the piano sound. I can save as an .mscz and that file does play correctly when I open it.

I uninstalled 3.04 completely and did a fresh install of 3 different versions with default settings.

MuseScore-3.0.1 - All GP files play correctly with fresh install
MuseScore-3.0.3 - Piano for all instruments
MuseScore-3.0.4 - Piano for all instruments

Oddly enough in 3.04. If I save the GP file as an .mscz and open the .mscz, the file's instruments play correctly, then if I go back and open the GP file , the GP file's instruments play correctly too. If I close MS and open the GP file without first opening the .mscz file the instruments are again all piano.

This happens on both Mac and Win versions 3.04 & 3.03...and as mentioned the GP files open and play correctly in 3.01

Here is a video of the issue
https://streamable.com/h6a4r