When you create a big construction job queue, for example placing 1000x1000 concrete, when the first robots place multiple tiles, there will be additional robots that had been tasked with those tiles already on the way. I don't know how the dequeueing works exactly but I imagine that when robots take multiple construction jobs they only dequeue the first one and the others are still left for other robots to attempt.

This results in many unused pickups and items being bound in transit, and all sorts of logistic storage shenanigans.

Other than this the mod is very nice and I'll surely use it again if this gets fixed.