After some period of use two smaller "flaws":
Firstly, it is a bit annoying if you are not careful and one of the capsules in the middle it falls down because not clean in the lead has been set.
Secondly, the capsules sometimes get stuck a little early at the "output". They can still be easily removed, and the next slide then clean after. Not bad. No functional limitation, only visually (because if one is bothered by such a small thing).
All in all still very satisfied.