I have a line layer that allows me to start making a feature. When I hit create after drawing, it doesn't actually show up or get added to the data for that layer. All of the editing privileges under settings are good, they are the same as another layer that doesn't have these issues. I've tried (I'm an admin), and someone else in the organization with editing privileges has tried. Hasn't worked for either of us. Any thoughts?
Possibly check the Developer tools (f12) Network calls to the REST API for any error codes. should be something like AddFeatures operation.
Also check if it is a Hosted Feature Layer or a Hosted Feature Layer View. It might be the case that the SQL or Geographic filter on the view then filters out the new edits from display.