Noisemakers keep breaking after one use

So, as the title suggests, I'm making noisemakers. They keep breaking after one (1) use. That's not normal behavior; this is new as of this level. (Sandzone secret level with fortified walls).

I've gone through three (3) of the damn things thus far.

Do they just break if they're too near another construction or something? Quarters are tight, I've thrown them (a) into close proximity to a bunch of bots, and (b) onto a bridge with a bunch of bear traps.

Or did I just get spectacularly unlucky?