That an injection-molded plastic part, of course, somewhere has an opening and this is here sinnigerweise down, you can not criticize. This is for manufacturing reasons.
But at this price I would have really a product expected to be qualitatively oriented to the plastic parts of Braun products. Unfortunately, this is not nearly like this. The surface quality is very poor and inconsistent, one sees sink marks, flow marks and weld lines. This is not related to small numbers, but with a lack of care and "profit optimization" of the manufacturer. And the absence of competition can unfortunately make the manufacturer.