Tank Does Not Render Through Itself. Adjacent Tanks Have Small Gap Between Them.

[i2smrt4u]

DW1.18 V1.4.1
The tank does not render its other edges when looking through it, but does render other tanks' edges.
Adjacent tanks have a very small gap between them that is coloured as though looking at the fluid inside them.
Very minor issues that do not require fixing, but I thought I should make note of regardless.