This is definitely the same problem as with Koni FSD and Bilstein. The bushings of the new shocks do have a innersize of upper 10 mm and lower 12 mm, while the bolts of the original shocks do have a size of 9 mm upper and 11 mm lower, Which difference cause a knocking sound with low speeds and uneven roadsurface.
It is a puzzle why these differences exist with Koni Bilstein and KW
I post a thread a few days ago with the question if this problem is solved yet with Koni