I don’t remember the tiles in the vault flashing and changing before you have the chance to proceed. Is this new or a bug? It is impossible to get across 
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Same issue. Total glitchfest.
I didn’t have this problem with a GTX but do with a RTX card. I don’t know if that’s coincidental though.
You can still get by if you memorized the ones that throw you up.
I just did this yesterday the 13th. And the tiles were find.
Have attempted to complete ‘The Crumbling Halls’ Multiple times. Each time I am unable to complete without taking damage as 2, sometimes 3 tiles are rezzed on-top of each other. Has nothing to do with Graphics card as I am getting struck by 2-3 traps at the same time. Reported Bug on several occasions with no response and no fixes. Still unable to obtain the achievement ‘One Step at a Time’.
Still going on.
Cheesed it with a level 103 Human Hunter but it is impossible for my level 99 Worgen Warlock.
Disappointed as it is a fun place to play.