Minecraft wiki entry for Development_versions, associated text: MC-47699 – Blazes are able to see a player through blocks.
MC-93892 – Flame arrows and fireballs set player on fire even when blocking with shield.
MC-110004 – Endermen and blazes do not drop experience when hit with splash or lingering potion.
MC-131122 – Torches cannot be placed on iron bars or glass panes.