My horse suffocated in a wall that it wasn't even in. >:(

Today, I was playing Minecraft, and I was parking my horse then, emptying part of my inventory when I heard my horse die and the text said, "Horse suffocated in a wall". The area that it was in was a 2x3 room and when I got off, my horse seemed to have teleported into a wall. 2 other mobs were in there. A slower horse and an Iron Golem. You guys cost me time, and a horse with High jumps, excellent speed, and 14 hearts! I'm super angry about this especially since my horse died for no reason.