Tile entity GUI doesn't work when accessed from y=256

when placing a tile entity at y=255, clicking on the tile entity to bring up the GUI doesn't work when clicking from the face of the block facing y=256. Command blocks do show a GUI but it's all blacked out.

How to reproduce:

1. create a new world
2. run the following commands:

/setblock ~ 255 ~ command_block

# it doesn't have to be a command block but it's easiest to see the bug

/tp @p ~ 256 ~ 90 0

3. right click. The GUI will not work properly.