I have Libreoffice on MXLINUX 19, Ubuntu, and MacOS X Catalina. On MXLINUX only, I get a very cool 3-D like interface (Menu), but not on the two others. All are Version: 6.3.3.2. Anyone have a clou?
You likely use different VCL plugins on each of the system (they are pre-installed selectively/chosen automatically based on the OS/DE). You may check that in Help->About. Selecting a VCL is done using environment variables.