There is a raw screed of a warm floor, 7 months old, all cracked, with a light buildup, not sanded. The cracks were filled with PVA and dabbed with a mixture of tile adhesive and PVA. The screed is immovable. I plan to level the floor with a top coat, and primed it before pouring.
Does the screed work well in the areas where the joints were coated with tile adhesive + PVA?
If there is no mobility, no problem.
It would have been better to cut the joints and grout them with non-shrink cement. But if the cracks are thin, you can generally ignore them.