I found a potential bug while building a new app in Experience Builder. I have a web map with a number of different layers, where some of them have editing enabled and others have not. I previously added two of the editable layers in the attribute table. Today I wanted to add one of the uneditable ones. But having done so I discovered that it was possible to edit attribute values in the uneditable layer in the attribute table. I double checked that the layer did not have editing enabled and I also got an error message when trying to add it to the edit widget, as it was a "read only" layer. So as far as I can tell this is a bug in the attribute table widget, and a serious one at that.