buffer renamed "expand(" on save

This issue has plagued me for years in MacVim and I have not been able to identify the source. It is intermittent, and occurs roughly 1 every 100 hundred saves (so probably 2 or 3 times per day). I cannot say what triggers it but I have not been able to make it go away. Any advice or fix gratefully received.

What happens:

• I hit <D-s> to save current buffer, which is already associated with a filename
• the buffer is not saved
• current buffer is magically renamed expand(, the contents are unaffected
• editing continues as normal (If I try to save again, then a new file called expand( is saved to disk).

Environment

• Vim version 8.2
• MacOS 11.6
• Terminal: GUI

Beginne damit, das intermittierende Speicherverhalten in MacVim mit Vim 8.2 unter macOS 11.6 zu reproduzieren, indem du in einem benannten Puffer verwendest. Untersuche den Speicherpfad und die GUI-Behandlung rund um die Umbenennung des Puffers in expand(. Als abgeschlossen gilt die Aufgabe, wenn der ursprüngliche Puffer weiterhin seinem Dateinamen zugeordnet bleibt und korrekt gespeichert wird, sobald das Problem ausgelöst wird.