Currently, we cannot customize "Utilization" table on "Project Operation" model driven app on make.powerapps.com .

This is expected behavior, but the error message below is displayed when we try to customize this, which is not user-friendly for some users.

Error: 

Failed to read a named property "UiTestGlobal" from "Window". Blocked a frame with origin "https://~~.crm.dynamics.com" from accessing a cross-origin frame.

It would be great if the displayed message is simpler to understand that this table is not customizable.

Also, it would be more user-friendly if we could customize the "Utilization" table on make.powerapps.com without any errors.