Musescore 4 produces a corrupted file

Hello Musescore team,
I am very happy with improvements in Musescore, more and more features on the Musescore.com platform and integration between the program and the platform.
However, I noticed that Musescore corrupts one of my music scores.

Steps to reproduce:
1. Open Skruszonym sercem - Łukasz Czerwiński gęste.mscz with Musescore 4 (OS: macOS 12.6, Arch.: x86_64, MuseScore version (64-bit): 4.0.1-230121751, revision: 9b70a8c)
2. Musescore will display a modal asking to convert from Musescore 1.2.
3. Check both checkboxes related to the font, click OK.
4. Save the file with a new name, e.g. Skruszonym sercem - converted to Musescore 4.mscz

Expected result:
The resulting file (Skruszonym sercem - converted to Musescore 4.mscz) can be opened in Musescore 4.

Actual result:
Opening the file Skruszonym sercem - converted to Musescore 4.mscz in Musescore 4 results in a message saying:
Open error
File "/Skruszonym sercem - converted to Musescore 4.mscz" is corrupted
Buttons: Cancel, Ignore
Hitting Ignore makes Musescore open the file correctly, but saving it again and again does not fix the message.