So I was just playing Minecraft and had a minecart placed below a solid block (secret entrance.) I hopped in the minecart and quickly dismounted to get past my entrance. However, the suffocation properties on the minecart thought for some reason that my head was in the block, killing me over a course of 12 seconds with no explainable or recognizable source of damage. The video cannot fit, but it looked like this: I placed rail, placed cart. Hopped in the cart and took a little damage. Quickly dismounted. Continued to take damage. Panic. Looks around, draws sword. Takes lots more damage and died. Death message: pokechimp31 suffocated in a wall. Also, I teleported next to the cart when I died. I'll add some pictures.