As an update, I used reflection to look at both PropertyMetadata and PropertyMetadata at runtime, and they both have all of their constructors. Looking at the error again:
Attempting to JIT compile method ‘(wrapper runtime-invoke) :runtime_invoke_void__this___object_object_object_long_byte_byte_Matrix (object,intptr,intptr,intptr)’ while running in aot-only mode. See https://developer.xamarin.com/guides/ios/advanced_topics/limitations/ for more information.
The method it’s trying to JIT compile could relate the constructor of PropertyMetadata, but I’m not sure what the last bit (object, intptr, intptr, intrptr) is trying to do. I’m probably going to take this over to the xamarin forums at this point.