The bug
When looking at a block, the hitbox still causes semi-transparent blocks behind it (such as water, honey blocks, or stained glass) to not render, in graphics settings other than Fabulous.
This could potentially be fixed by simply making the hitbox opaque for those graphics settings, rather than translucent.
Linked issues
clones 1
is cloned by 1
is duplicated by 32
27 more links
A very strange glitch