"Fighting a gym when a egg is about to hatch"

#PokemonGO: Hi,A friend and I had experimented something yesterday when doing a gym battle.Excuse me if it's well known, but it seems that if you have an egg about to hatch, the gym will send you the "error" message when the egg will start his animation, and prevent you to fight the gym again for 10 minutes.It happened twice, on two different gyms, once for each of us.Someone else had experimented that? via /r/TheSilphRoad http://ift.tt/2dNODYY