***
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SUMMARY
Krita seems to be unable to keep on while trying to overwrite a file (for updating it or replacing it)

STEPS TO REPRODUCE
1. Open a file on a CIFS file system (like a shared Windows network drive)
2. Try to save it again
3. That's all folks

OBSERVED RESULT
At best, Krita freezes, at worst, the whole X11 session does.

EXPECTED RESULT
The whole computer should not be brought down.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu Mantic 23.10, Kernel 6.5.0-27, MATE 1.26.2
(available in About System)
KDE Plasma Version: N/A, how do I?
KDE Frameworks Version: N/A, how do I? 
Qt Version: N/A, how do I?

ADDITIONAL INFORMATION
While trying to kill Krita, the system complained with this message
"Lockdown: ftscanvhd: raw io port access is restricted; see man kernel_lockdown.7"

Also, saving with a *different* name works. But I don't want to have 4985762985 versions of my working file.