I have been having issues with this mod. Have only tested the fire and frost flashlights so far. The fire flashlight works like a charm, but the frost one is causing -specifically- hopping enemies (e.g. slime) to begin rapidly shifting backwards (teleporting, basically). This can bring them up cliffs and out of reach however they do not shift through walls.

Just going to keep from using the frost flashlight for now, but for anybody reading this, if you've been seeing teleporting enemies, this may be what's happening to you.