There has been a glitch around for a while that lets you teleport through walls of up to multiple studs thick. Here is a Youtube video showing it:
I haven’t found any reports of this even though this video is already a year old, but players are using this glitch in my experience to cheat and claim rewards they otherwise could not.
Expected behavior
Avatars shouldn’t be able to teleport using emotes, such as the V Pose emote.