Open any database where 2 tables are related to another. https://bugs.documentfoundation.org/attachment.cgi?id=191983 Go to the line, which connects the tables → right mouse click → edit. You get the dialog for editing a relation between 2 tables. Press "Help". No help available, Help-ID: dbaccess/ui/relationdialog/dialog-action_area1 When looking for this in the help this dialog is described nowhere.
Have found the help page here: https://help.libreoffice.org/7.6/en-US/text/sdatabase/05020100.html?&DbPAR=SHARED&System=UNIX but don't know how to connect it the right way.
I couldn't find the content when moving through the toc of "Base", but the dialog is a dialog, which should appear in the contents of Base, for example in "Working with tables".
On pc Debian x86-64 with master sources updated today, I could reproduce this. Weird thing is with building which includes help (--with-help), it works but the online help doesn't work.