Gym update not working

Gym screen opens, Im able to select a Pokémon and a berry, it is given to the Pokémon, and then a red error message from the top of the screen comes in and tells me to move closer to the gym to interact with it. Similar to the drop down I get when losing GPS signal. The berry is then returned to me, fortunately.

Im actually happy this doesnt work. It makes it way easier for people to defend gyms. You finally got something right with the gyms and now youre trying to mess it up by allowing lazy people to never leave home and help their Pokémon? Lame.

Pat - iPhone 5 about Pokémon GO, v1.39.0