Surrender still has problems/bugs in stress 53, but they are more minor, but just break the animations/imemrsion
This is when crouched or prone in surrender, while holding either W, A, S, and/or D, it breaks the turning animation in crouched, and in prone, you won't be able to turn around at all.
Also, there's an issue, when you go surrender during prone, your character , will put out fists on her/his head, instead of laying hands flat on head, but this may not be the case for all characters (in this case, it's the character who has the orange/red short hair)