I have added an AnimationPlayer to a ColorRect node. I can make keys and tracks for any property with the little key button, but when I click the one for the Material -> Shader Param -> my_param, the editor doesn't respond at all. In the Output, I get an error:
core/object.cpp:1228 - Error calling method from signal 'property_keyed': 'EditorPropertyResource::_sub_inspector_property_keyed': Method expected 3 arguments, but called with 1..
I can change other shader parameters, just not mine, so I suspect I'm using the wrong approach. How should I be adding a custom shader param animation track?