we lucky there not many people on yet
or we will be unable to talk about bugs like this in the open.
there many bugs with the animation, but those don't matter right now, bugs like the one you listed are the kind that should be known before beta is over.
good job on finding it
with that being said, there an animation bug that LOOK like it let players walk pass walls.
please note that this is only an animation bug and the players are NOT using ::noclip (a command that let players walk pass walks and should unable to be used by normal players and can be reported if seen)
this bug happen when a player dies, so if a player dies and look like he able to walk pass walks and walk on water, then it must be the animation bug. (Goddess already seen this bug when I die from a NPC summoning test for the new skill) please don't report anyone if you see them using this bug...most likely they may not even know they are using it.
side note: Goddess told me that the report system don't work in the game yet, so if you see anyone using a bug to gain exp or money, please report on the forums.