The only automatic addition is for the diamond amenity and IME only if the stay posts but the hotel fails to add the amenity. If the entire stay is missing you will get only the normal amount of points once it is added by GP agents.

50% bonus for the closed RC/GC bonus that failed to post is not a policy (as opposed to the 50% bonus for the diamond amenity) and I haven't gotten it before.

I also ran into issues with base points being less than what they should have been and have received "points for my trouble" on multiple occasions (I think the highest was 2k). However, these are the goodwill tokens and not something that you should count on receiving every time.