Setting custom material property as controllable by data input will cause assert in CStudioApp::checkDeletedDatainputs()

Add aluminium based material to a basic object. Set tiling property of the material as datainput controlled. Save and create new presentation. Add the first presentation as subpresentation of the new presentation. Save and reload the presentation -> assert because the custom property is not in the list of known supported properties.

It also needs to be checked if runtime can handle data inputs on custom material properties. If it can't, then perhaps the solution is to not allow data inputs on custom material properties.