Blazes Not Working Correctly

Hello, This Might Be a Duplicate, I searched And Could Not Find any.

I was In the nether at a Blaze Spawner, Not Only did the Blazes 1 hit me, It destroyed My Full Diamond Armour Which Had No Damage On Them. They All Had Unbreaking III, And Mending. Keep Inventory Was On When i did this. I was Really Dissapointed When I respawned Back In the Overworld to see I had none of my armour that i had worked very hard to get. Please Fix This Bug. This has been a bug since the official release Of Better Together 1.2. Thanks!