Mobs Clipping Through Tinted Glass

In certain instances, mobs can clip through tinted glass. I've observed this in two ways:

1) In a trident killer, the pistons will sometimes push a spider or skeleton through tinted glass that is a apart of the outer wall of the trident killer.

2) I had a zombie and a zombie villager in a boat which was sitting on top of a tinted glass floor. When I broke the boat, the zombie villager clipped through the tinted glass and fell below while the zombie and the boat item stayed above it.