Hello again, sorry if this is already posted as a bug, I skimmed through and didin't see it but maybe it already was.. anywho, chiseled glass is see through on the bottom side, meaning I can see through the block under it down to my room below. Kinda hard to explain so i will post a screenshot

http://imgur.com/a/KqZSV

It seems to affect all sides, actually.

Screenshot

Known issue

This is fixed