Version 3.1.0.7078 Export Parts to WAV BUG

STEPS: Create Parts for each instrument. Export Parts to WAV file. BUG: The WAV files should play one instrument or part. Instead, each WAV file includes most of the parts and uses different instruments than the ones specified to play the parts. For instance, the WAV file that should only have my violin part, actually has the acoustic guitar part, violin part, and cello part. The only part it does not have is the drumset part. Furthermore, instead of a violin sound, the WAV file has a piano sound playing the violin part. I was curious if this was a bug with the particular project or with the new version of MuseScore. So I tried Exporting the Parts from an old project. The WAV files from the Exported Parts had the same bug. The Export function works fine. This BUG only affects the Export Parts function when choosing to export to WAV file. Thank you!