Files renamed in LO Writer in Linux Mint

I’m not sure where I should post this question, so redirect me if appropriate.

LibreOffice has been my office suite for years on Windows. I keep my files (hundreds) in Google Drive.

I installed Linux Mint 22.3 on an old PC. Current version, 22.3. I connected Mint to GDrive and can see and access all my files. LO is installed, v24.2.

Here’s the problem: When I open a file, ‘test1.odt’ in LibreOffice Writer on Mint, it doesn’t load as ‘test1.odt’, it loads as ‘1SwZGeNW1CLTbEbXyc97t3g80K7eKheKN.odt’ or some other long string of characters in directories and subdirectories equally renamed. When I save it, the original file test1.odt is untouched, and a new file is created with that long string of letters and numbers.

What is going on? Why is LO seeing and saving the files in this way when Linux Mint sees them under their usual name? Is there any way I can stop LO from changing the name? I can’t navigate files whose titles I can’t make sense of.

Thanks for any help, and/or redirection