Playing on the Direwolf20 1.16 v1.10.1 pack and encountered this bug. This pack uses create-mc.16.5_v0.3.1c if that helps. New to this mod but I'm pretty certain I have set this up correctly. Fantastic mod so far, an absolute blast to play with!
https://user-images.githubusercontent.com/86502498/123496647-fb661180-d620-11eb-9aab-39f601529ed9.mp4

Try adding 'Deployer' as an ally in ftb chunks

Yep, that solved the issue. Thank you.