In solo shuffle, I just discovered that my warlock pet disappears. When this happens, I cannot summon a new pet during the round. Also, I cannot summon a new pet the next round either - I’m forced to play the rest of the solo shuffle without a pet.
I’m not sure how I triggered this. I think it happen when I summon a new pet while already having a pet.
Additionally, when this bug occurs, I cannot leave the solo shuffle either. The “leave” button just does not function.
Today an ele fell through the ground and down in to oblivion two rounds in shuffle. He died and lost the rounds.
I thought we got rid of that as they removed blade’s edge. Only ever happent to me in blade’s edge when you got knocked from the bridge and rooted by earthgrab totem and then you would start falling through the ground and start making your way towards the core of the azeroth.
Nah.
You can seemingly do it intentionally as a DK if you’re kul tiran. You just blinding sleet and then hit someone off an elevation with the racial while they’re in blinding sleet. I’ve fallen through the ground and disconnected every time someone has done that to me. Quite ridiculous.
That sound like something blizzard should fix, same like the mind control dcs when someone mc and bounces your toon also with some elevatated spot on the map 
Have you tried to just do a /reload when you can’t summon a new pet or leave?