Unfortunately, Construction Drones don't work properly with "Lane Balancer (continued)" mod by CaptainWHot and quite possibly with any other mod that runs some script on placing or mining an entity.

In case of balancers, when deconstrucing one with drones I get "Invalid LaneBalancer [1] deactivated" message, when placing a new balancer it simply doesn't work (items on belts stay behind the balancer).

I've just remembered that there is also a problem with "Attach Notes" mod too - notes stay in the world after entity they were attached to get removed by Construction Drones. Notes work properly with blueprints and traditional construction bots - even modded ones like those from "Early Construction Bots" so I'm almost certain it's an issue with the way Drones mine and place entities.

The mods are probably not listening to the correct events