Act 1 Fairgraves attacks before dialog ends

Fairgraves's very last dialog just started and he and his skeletons already started attacking. I saw this happening on one streamer too. If you are well geared you could listen it, but I think many new players will panic and accidentally skip the last dialog.

This happened in Harbringer league.

This just happened to me as well. I wasn't able to finish listening before I almost died. :(