Trim across base of windscreen (includes washer jets) poorly fitted.

[HPsauce]

I just noticed that this trim, which goes across the whole base of the windscreen, is a very poor fit.
Specifically the centre section and extending somewhat to the drivers side past the central (for nearside) wiper pivot is clear of the glass by up to 1cm. It cannot be pushed down, it's obstructed below in some way.

It only seems to be fixed by 3 hex head bolts, one at each end and one in the centre. And the wiper arms obviously block removal as well.
The end bolts look OK (and have non-circular washers) but the centre one has some rubber debris on top, is rusty, and has a rusty disc washer under the head.
I have before suspected that the windscreen was replaced in the past, so maybe this wasn't refitted properly?

Can someone post a photo, or at least describe, what this central fixing should be - and confirm there are just 3 in total?

This big gaps also means that debris washed down on the windscreen isn't trapped by the mesh in this trim, probably adding to my scuttle drain woes.