I can't explain it so please download this test qst. link
1: Look at the moving spike. It works normal.
2: Kill yourself.
3: Look at the moving spike. The changers disappeared and the spike doesn't change the direction.
Please, please fix this bug. It happens also in my real quest, and I can't continue my quest because of this.
(By the way, when is the next build out? It will be much more stable than Beta 18)