What that debris caught in the plastic guide itself or just generally between the chainring and frame/backplate?
Both. Bike and I took out a right hand berm and slid a while so twigs/bush/mud was in the guide, back plate etc. Only happened once (the clogging, not the falling off).
I think the more flimsy the guide the more you'll be able to mash the chain into an even worse position.
