Sorry if this is duplicative to another post/if I don't describe it well.
I have an Experience Builder set to track the status of item development in ArcGIS Online. I have a table widget with 2 sheets for one of the layers in the map of fields to fill out for that layer. When I go to add a third sheet, it just.... doesn't. I go through the process of clicking to add the data source, but it just sends me back to the beginning panel to Add Data.
One of the layers in the map is portaled in from my organization's enterprise Portal, the other is published to ArcGIS Online. The two sheets currently are from the portaled layer, the other I'm trying to add is the arcgis online one. I've experienced this issue the last couple months with both types of layer (regardless of database source).
I've resorted to putting my table in a Section and using views navigation to switch between the two table widgets. This works for now, but the more clicks I put between my non-gis users and their end product, the less likely they are to fully adopt the GIS solutions.