I have a hosted Feature Layer with points, lines, and polygons in AGOL that users need to be able to edit in ArcMap 10.8. Editing is enabled at the Feature Layer level and there are no identifiable differences in AGOL between the points, lines, and polygons as far as editing privileges are concerned.
When initiating the Edit Features->Create Local Copy for Editing, only the polygons are copied to the local geodatabase. The source for the points and lines remains the AGOL service. Another user has tested and verified that they experience an identical issue with a different dataset so it doesn't really appear to be related to my specific configuration of the dataset on AGOL.
I have extensively reviewed ESRI documentation and can't find any reference to others with this problem. I've also tried multiple iterations of editing permissions on the Feature Layer unsuccessfully.