The fix is live now (v2.0; the jam host said updating during voting is fine). Every keg left in the game now blocks a strike that would also light a torch. The rule ended up a bit different from what I promised: on the no-wind warm-ups (levels 4-6) a keg can't sit next to a torch trail without making those torches unlightable, so those levels lost their kegs instead. Thanks for catching it.