End Gateway teleports Player inside of transparent blocks

The end gateway is supposed to teleport the player to the first non-transparent block it finds along its search path.The problem is that it doesn't check the blocks above that block to make sure that they're air blocks.

How to replicate:

Build a platform outside of an end gateway, and make one block higher than the rest. Confirm that this is the block that the gateway will teleport you to when you come from the other side. Now place two glass blocks above that one. When you teleport back to that platform, you will be place inside of the glass blocks. Also works with stairs.