Missing a little rubber stopper. You can see where its supposed to sit in the first photo. Not sure these are available so you might have to make some in silicone rubber
Yes, these are iconic in design but look dreadful when both the levelling grommets’ disappear.
There were originally 2 per mechanism but one is enough. I resolved this issue on my 1997 MK1 by supergluing a couple of small round pieces of rubber in place of the functional part of the grommets. Just test first before supergluing