musicxml and banjo 5th string
Create a 5 string banjo tab. Make sure to enter the 5th string open a few times. Save as MusicXML. Load the musicxml file that was just saved.
Notice that all the 5th string notes have been moved to the 1st string. It looks like the musicxml files are saved properly -- the xml load seems to ignore the string/fret info for only 5th string notes -- the other notes seem to work fine.
Older versions of Musescore loaded the 5th string info properly so this bug was introduced sometime in the last few years.
The test xml file below was created by musescore 3.4.2. It has several notes on the 5th string that are displayed on the 1st string.