1.) Banners, Stained Glass, SlimeBlocks and Entities (Excluding ArmorStands) behind transparant blocks like Ice and Stained Glass (Normal glass seems to work fine) that are part of an ArmorStand (As a Held Item or Head) will render like there is no iceblock, while everything else renders like through an actual iceblock: http://i.imgur.com/47Gf1Cj.png

2.) Banners, Stained Glass and Entities (Including ArmorStands!) behind transparant (like Ice and Stained Glass, again normal glass works fine) dropped item entities will not render at all.
http://i.imgur.com/uA2XoIU.png

3.) For some weird reason an Dropped Item entity CAN also renders weird through transparant blocks part of an ArmorStand. But not every dropped item does this and it differs for each block you look through (even the same type of blocks!):

• http://prntscr.com/58anmm (Note that just one of the 4 dropped Web items is being rendered wrong)
• http://prntscr.com/58aoma (Note that through another block all 4 dropped Web items are being rendered wrong AND that 1 of the 2 snowballs (The thrown version) is also rendered wrong together with 1 of the 4 Stainedclay blocks that are part of armorstands.)