Blazes should not attack at me if they cannot see me but are anyway. For example, at my Blaze grinder in Survival mode there are 4 Blazes all shooting at me without having direct contact with me. I have a small hole for the Blazes to fall into and even when they are hovering around the hole and unable to see me, they continue to shoot.

The two pictures show Blazes preparing to shoot (they did afterward) while they cannot see me from behind the Nether Brick Fence blocks.

Steps to reproduce:
1. Spawn a Blaze or find one in a Nether Fortress
2. Block a small area for yourself so that the blaze does not have direct eye contact but be within 16 blocks of it
3. Wait for it to attack