With both rotatorBlock and dispenserPlacesBlocks enabled, the cactus will shoot out of the dispenser instead of rotating the block.

What kind of blocks - testing right now with carpet extra and not seeing this happening.

a hopper facing to the side with the dispenser at the bottom

Video: https://youtu.be/QuxgChaQkNc

So basically I think the cactus counts as a block so the game tries to place the cactus as a block rather than doing the cactus's special dispenser action.

Same issue whilst setting up a new server with the carpet mod included. Any way how to solve this bug myself?