@eastgate. Indirectly reported, here, in a different context. It could be that not too many users have tried dragging multiple web links in from Safari into the same note to then turn them into Web Links so they will be live in Preview and also export.
My use case has been to collect web sources illustrating each of several dozen themes without ending up with hundreds of separate source notes.
Quite often, when I drag in a new link and then turn it into a Web Link as described above, one of the existing Web Links “higher” in the note deactivates and its link destination disappears. So far at most I have 3 or 4 links in a given note, but the plan was for several more.
On my machine (v. 8.92, Big Sur) there seems to be something a little funky with links in the “RTF layer.” I have assumed that is already being addressed.