The read-only property of the Feature Table widget does not show the expected result.
Bug ID Number
May 13, 2015
December 1, 2020
After review by the development team, it has been determined that this issue is related to a known limitation with the software that lies outside of Esri's control. The issue's Additional Information section may contain further explanation.
The Feature Table widget is still in beta. Editing has not yet been enabled. To avoid confusion, the read-only property has been removed.