Kicked for Inactivity from Junkenstein PvE

I was playing as Zenyatta during the Junkenstein event mode and was kicked for inactivity even though I was moving around, and throwing discord and healing orbs. The three players I was playing with were taking care of the enemies before I could even hit them, so there was no way to keep me from getting DC’ed, even though I was still participating via healing etc. I was unable to rejoin the game and do anything but spectate, either.