Fixed... at least in regards with the constant wrapper, should still be possible to exploit something like this with vector construct but that's a job for future me (or Dudblockman)

Originally posted by @Kamefrede in #661 (comment)

Using vector construct, it is possible to freeze an entity completely using add motion, create vector, and the exploit described in the issue mentioned above. It's a pretty cool trick though, maybe we shouldn't patch it?

fixed in latest release