Hoppers texture model has a gap between the two sections

What's Happening:
As show in the screenshot, hoppers that are viewed from the side show a small gap between the larger and smaller geometry pieces, allowing to see through it.

What I expected:
I expected the hoppers to not have that gap; it feels strange, especially when there are multiple hoppers one behind the other.

How to reproduce:
Place a hopper, facing sideways, at head height. Looking at it should be enough to see the gap.

Screenshots Attached: Yes