I installed LibreOffice version 188.8.131.52 on my Mac.
Unfortunately, whenever I open a second document (or attempt to view the Properties of an open document) a Tab Bar appears, showing open documents.
This would be good, except the Tab Bar is positioned on top of the Toolbar, making it impossible to use.
I have noticed similar problems (overlapping dialogs) in other applications since upgrading to the last couple of versions of macOS.
Is there a app specific (or general) fix?