Hey Garry,
Extension Methods do not seem to work with overloads. If I have an extension method called DrawGlowingSVGText Extends Graphics that has two overloads (say one that takes 7 arguments, and one that takes 8) they merge in the editor just fine but when you try to use the 7 argument implementation it fails at runtime with RuntimeException: Expected 8 arguments but got 7.
This does not appear to be an issue for non-extension methods.