Part Name Adjustments

Hey There.
I'm making changes in individual part names, and saving it, but once I save, close and eventually reopen Musescore 4, I find that the part name adjustments have reverted back. to the unadjusted part name. For context: This is for labelling percussion parts and what individual instruments they have, but I don't wand the bulk of text cluttering the score in one line like it does when I change the long instrument name. Formatting is odd