Moving along a beam's axis let's you phase through it.
Created by: DeityLink
WEBM to illustrate: https://dl.dropboxusercontent.com/u/33846352/beam_issue.webm
Steps to reproduce: 1-turn on an emitter 2-move onto the beam, the beam will stop at you and deal damage as usual 3-move one tile on the beam's axis (in one direction or the other) and the beam will now continue through you and you won't take any damage. 4-moving one tile again will make the beam stop at you and deal damage again.