Just installed LibreOffice 7.1.7.2 on MacBook running Catalina. I can create a new doc or spreadsheet but cannot save it - when I click save, get spinning wheel for a while and then it goes away. Save as… is no better. If I open an existing document I can change it and save with same name. Thoughts?
You need to give LibreOffice full disk access from System Preferences > Security & Privacy.
See this site on how to do it if you aren’t sure: Explained: What is Full Disk Access & Full Permissions on macOS Mojave .