Weird emmiter glitch tied to a seemingly innocent piece of glass.

In this level I'm working on there are numerous emitters, some are on toggle switches, some just run all the time. It's all pretty standard.

Except today I found a small shard of electric glass lying randomly at a spot in my level, not glued to anything. I couldn't work out how in the world it got there. (There is a thing on a rotator up above, but I don't see any shards broken off or anything). So I just deleted it. And then all of the emmiters in my level suddenly stopped working. I rewound, went back into the pod and reloaded - it happens consistantly when I delete that thing. Except only when I delete it in that specific place. I moved it to somewhere else and deleted it, and the emmiters were fine. But I'm concerned for my level. Does anybody have any clue as to why this is happening?

It likely has nothing to do with the glass. You're likely experiencing the emitter bug brought in with 1.10. Emitters are fine until you edit the level, when you do they stop working. Might take a few weeks to patch.