"Probably old gym bug"

#PokemonGO: Today, my brother played Pokemon Go, which he hasn't played for months, but because of Lunar New Year, he logged back into the game. (He was dissapointed that there wasn't an event)Anyways, he fought a gym and placed a Pokemon in. For some reason, he decided to change his nickname. Its fine by me.Then the interesting thing happened, the add Pokemon button is still showing up, despite his Pokemon is already in the gym. He tried adding a Pokemon in, and it resulted in an error.It's not a big bug, but still a bug nevertheless. via /r/TheSilphRoad http://ift.tt/2k2Cvpy