tomoforge

Sorry for necroposting but I think I found the solution to this one. It's not caused by any bug at all. It's because you somehow used "tcl" to change camera angle while still selecting the NPC, therefore disabling the collision of the NPC. The same goes for anything you might be clicking on at the time of typing "tcl". So, to fix this just click on whoever or whatever that lost collision, then type "tcl" again.