Ladder and trapdoor hitboxes behave as full block when underwater

When a ladder or trapdoor are submerged underwater, their hitboxes behave as full blocks. It is not possible to select anything behind an underwater ladder or trapdoor because the hitbox is selected when it shouldn't be.

In the attached image, the hitbox for the trapdoor on the top right is selected even though the crosshairs are nowhere near the hitbox.