I think there's sticky and there's sticky: in the drying in jars phase, when I keep my eyes like a hawk on the humidity, my buds always stick together, and I also use a long probe to gently separate them. How can they not stick to each other??? I think of that as way different from moister plant matter, like when I first hang the colas to dry or lay them out and make sure they don't touch each other...
I've never had a problem with mold, although I live in a humid place; the big dehumidifier and all the hygrometers were good investments for me: I always know what the humidity is in my drying room, which is the most air-conditioned and hence dryest room in the house.