I'm playing with partial methods and it seems that ReSharper is really working against the user in all respects when it comes to partial methods.
Creating a partial method that is not implemented grays out the "partial" keyword with the warning "partial method with single part".
Creating a partial method that is implemented grays out the partial declaration (the one without the body) and says "Private method 'xxx' is never used." which is very misleading.
Partial methods are there primarily for generated code and very often times there may not be another partial class at all, and if there is not all partial methods will be implemented. Creating warnings like this on them seems very much against the purpose of partial methods.
Using R# 917.