I have 5 hosted Feature layers, with data points symbolized, in a Web Map in AGOL. When opened in Field Maps, only the points from 4 of the 5 Web Map layers populate the Map.
All 5 layers are listed in the layer list in Field Maps, including the one that doesn't populate. If I turn off the other layers, leaving only the 5th non-populating layer checked, no points show up.
Points from all 5 layers show up in the Web Map when opened in AGOL, just not in Field Maps.
I have saved and re-saved the Web Map & Layers in AGOL. I have also reloaded the Web Map in Field Maps several times, with no change.
I have compared all of the settings for each of the layers in the Web Map and there appears to be no difference between the 4 layers that display in Field Maps and the 5th layer that doesn't.
The Web Map itself has Field Maps access enabled.