• Forge Version: 1.12.2-14.23.5.2847
• BuildCraft Version Last 1.12.2 Release
• Any additonal mods (Every mod on its newest 1.12.2 Version): SecurityCraft , appliedenergeistics, betterportals, ColoredLights, ComputerCraft, Costum-NPCs, DynamicTrees , Forgelin 1.8.4, GeneralLaymansAestheticSpyingScreen , ICBM-classic, iChunUtil, IndustrialCraft 2,justenoughbuttons ,malisis core , malisis Doors, McJtyLib, RFTools-mod, SCP+Lockdown, SCP+Lockdown Heavy+expansion, scple, Site 58, WorldControl, World Edit.

Steps to reproduce the behavior:

1. Use Newest Build craft version of 1.12.2
2. Build a engine
3. place lever next to / above it, you can also try to connect it with redstone.
4. Engine wont react.

(I know there is a large cahnce for incombability but i wanted to report it just in case.)

Thanks for reviewing my post. Have a great day. - Woof-exe

What engine are you using, and what are you trying to power? Can you upload a screenshot? Also, does this happen without any other mods? (In theory nothing else should affect how engines operate though so this shouldn't matter).