Just upgraded to Mint 20.3, and I figured I might as well the inaugural bug report, if that's allowed.
I see a lot of potential in this Library app, but right of the bat there appears to be a bug with the LibreOffice Writer tab, wherin multiple files I have set to open with the text editor appear alongside proper docx and odt documents. What this means is that my poetry appears alongside my MPV Lua scripts.
I don't believe this is intentional, so I'm reporting it as a bug.
I see in the roadmap there are plans to better filter what appears in Thingy/Library, but somehow I don't think programming scripts are supposed to appear in the LibreOffice Tab by default.