Riot JxE from the Render Strike Team here. We're the team that's been refactoring our rendering code in order to clean up the code for our other engineers!
We've put a test on the PBE this patch that's running Kha'Zix and Gromp through our new rendering code. There should be NO visual differences between the two, so let us know if you see any weird visuals or rendering bugs on Kha'Zix and/or Gromp. Please post screenshots in this thread if you find any.