Accidentals Not Rendering in Chord Symbols

Hello,

I'm using MuseScore 4.1.1 to open files that I created at various times since 2015. After I open the files, I close the files and am asked to save the file in a location, as if the file were brand new. When asked to save the file, I replace the existing file. I'm accustomed to MuseScore asking me to do this process when I open files that were created with an older version of MuseScore. However, when I open the file again, after having saved and replaced the older file, accidentals in chord symbols are not rendering as accidentals. For example, flat symbols are rendering as 266d. When I try to manually edit the chord symbol, the flat symbol appears while I'm typing, but I once hit the enter key, the chord symbol renders 266d, instead of a flat symbol.

Can anyone help me solve this issue? Currently, my only workaround is to create a new document, copy and paste everything that I can except for the chord symbols and manually recreate the document, which is not a practical workaround. Please help.