Leaves on fast graphics ignore backround blocks and display void in the end.

I planted a tree in the end and looked through the leaves

What I expected to happen was...:
I expected to see full leave blocks since my graphics were on fast

What actually happened was...:
the leaves were transparent like if i was on fancy but the backround was void

Steps to Reproduce:
1. place a leave block (on fast graphics)
2. ...look through the leave block
3. ...you will see the end void behind the leave block instead of what is actually supposed to be behind it