I am not sure if this is anything to do with SU/LO but it might be related to PDF output on a Mac from LO.
I noticed that one drawing in a multi page set of PDF drawings was not showing much detail. It turns out that if you zoom in and out, sometimes all detail is shown and sometimes it isn’t. That makes it hard to know whether anyone I have sent the pack to has the same issue.
Has anyone encountered anything like this before? I attach screenshots of the same PDF page at different magnifications to show how variable it is.