proj.db access fails when embedded into the app folder and installed from MSIX

[creatio-ua]

Problem description

1. When I run my app installed to "%Program Files%", the embedded proj.db is loaded normally and everything works fine.
2. When I run the same app installed as an MSIX Windows package (inside the installed folder, the folder tree is the same), the proj.db access fails in some cases (the screenshot below hopefully explains what I mean).
3. If I copy proj\proj.db to "%LocalAppData%", it'll work even for the MSIX package installation.
4. If I set a read-only attribute to %LocalAppData%\proj\proj.db, it still works even from an MSIX package installation.

This is how it looks in case of the write access failure (see ACCESS DENIED):

And here's an example of the normal operation:

Expected Output

I don't want to overwrite the shared version of proj.db installed by some other software (into "%LocalAppData%"), and also I don't want my version to ever be overwritten. So I'd like to have a bundled version of proj.db working even when it's installed from MSIX package.

Environment Information

• OS:
  Edition Windows 11 Pro
  Version 24H2
  OS build 26100.4652

• PROJ: 9.5.1 (static lib)

• GDAL: 3.10.0 (static lib)

• libSQLite3: 3.46.0 (shared lib)