I have an Experience Builder application that's not behaving as expected.
I have the settings for the Editor widget configured on my layers to allow updates only. However, when the editor is opened for a given layer it reports that the form is 'Read Only' and allows no edits whatsoever.
Editing is enabled on the layer, and with the same account I can commit edits in the map for the application, just not the Experience itself.
This was discovered after troubleshooting the issue where the owner account could in fact do whatever it wanted even though adding records was disabled.
The settings:

What the user sees: This is the same account that submitted the record

Layer settings:

So what gives?