For around a year now, Mei’s ice wall will occasionally spawn either in the wrong orientation [1] or in a completely different location than the one selected by the player [2] [3] [4].
This can lead to huge swings in a fight, and has often been the difference between stopping an ult and dying to it.
This has been a very long-standing issue, much like the cryo-bionade bug was. Hopefully we can get some attention on this sooner than later.
[1] https://gfycat.com/ElementaryEcstaticChicken
[2] https://streamable.com/mabfv
[3] https://streamable.com/yazrt
[4] https://streamable.com/0d4ww
Additional examples:
v1.23.0.1:
https://streamable.com/45ylq
https://streamable.com/9loki