Whenever I change anything in a web map (e.g. even just shifting the basemap slightly) and re-save, then go into Field Maps settings for the map, any previous changes I've made are lost. This includes offline mode (resets to being off) and any configuration on the form elements.
I'm using ArcGIS Online, and get the same behaviour for maps in classic and new map viewer. From what I understand for the help docs, there can be a problem in Enterprise but AGOL should be ok? Is this a bug or am I doing something wrong?