When first rendered, the checkbox used for boolean dynamic data fields does not properly render their value, instead rendering to the default value of off. The data received from the server is correct, and if changes are made, the data sent back to the server is also correct, likely as a result of state being maintained outside of the checkbox component.
It is very likely that props are being used incorrectly, and MUI is treating the checkbox as an uncontrolled component, causing the value received from the server to be ignored