I think you've somehow bugged this save-file. I tested the same spot in my set of saves and have no trouble at all.
edit: Probably worth mentioning my saves were created on previous versions of R06...
i think you are right, i did enter cosmo canyon with new translation on and used the new translation to rename nanaki, then immediately after that i went outside and saved and turned off new translation for the observatory and gi cave, but i guess i was too late
so i need to load my save before i got there, huh? that sucks, i hate the gi cave part
sorry folks, i really wanted to use that part of new translation to rename red to nanaki
genius addition to the game though, i remember thinking that should be an option as a kid playing the game for the first time
i'll wait for r06g to try it out though