Issue description:
My girlfriend and I were playing on our Resonant Rise 5 minecraft server where she built a massive enclosure for animals. To protect the rabbits from jumping to their death off a small cliff, I installed the environmental controller with the Feather Falling+ module (yes the radius, height and power was sufficient) but after putting in a test rabbit, it almost died. I then tested it by dropping a sheep and a creeper DIRECTLY on to the controller, and they still took damage.

Steps to reproduce:
Launch Resonant Rise 5
Set up the rftools controller
Input power (I used a Redstone Spectre coil from random things)
Set the size to be reasonable enough to test
Turn it on set to mobs/hostile/passive (all don't work)
Drop mob

Versions:

• Minecraft: 1.12.2
• Forge: 14.23.5.2838
• McJtyLib: 1.12-3.5.4
• RFTools: 1.12-7.72