Transparent skin bug exploit

This bug is now serious.

I often found this bug  on my server.

I think this bug is using skin pack
This is very different from making images transparent.

I think this bug is already being used by a handful of hackers

I think the bug is to make the hacker transparent by not putting the texture to be textured into the geometry to prevent subsequent actions.

The damage caused by this bug is invisible to the hacker.
So it is difficult to pinpoint the location of the hacker.

 

(I am using a translator)