it does surprise me all the time that we still have this heritage..
people will do anything to have the latest software, the latest applications, and it seems downright disillusioning that LibreOffice still uses the old path as default :)
I know that it could be any number, and no number is necessary in the paths -- otherwise it couldn't have been left like this through v5 years and now in the v6 era either ...
it should, however, be handled somehow... it is really a "cosmetic" problem :)
Steps to Reproduce:
1. go: tools / options / paths
2. look at the paths :)
you'll find "libreoffice/4" in nearly all paths
there should be "libreoffice/6"
or.. just "libreoffice"
User Profile Reset: No
I only checked this on Linux, linux mint 18+
*** This bug has been marked as a duplicate of bug 113783 ***