These happen to me multiple times this month, kicking me on instance during loading.
I primarily experienced it in Solo Shuffle (after waiting almost an hour then this bug happens) and recently, I experienced it in RBG (sadly my teammates reported me). Kindly notice this bug bliz. Thanks
Edit:
I always stuck on loading screen and it will not proceed to the game.
The stuck does not take more than 5seconds.
Update: This bug always happen to my warrior and never happened to my balance druid
Update 2: This bug happened to me with my Affliction Warlock. The error message is “Transfer Aborted: instance not found” then I received a 15mins No-Show. Preventing me to queue Solo Shuffle for 15mins.
Update 3: I experienced this again “Transfer Aborted: instance not found” error. and now 30mins No show penalty after 20mins+ of waiting in solo shuffle