I have made several potential spawn locations, but when I walk into theses rooms, or sometimes even near them, I suffocate and die. The spawn points are made of Obsidian, Blue Lapis, Diamond, and Glass Panes. My first thought is that this is some kind of bug, but I wanted to find out if anyone else had this issue.
I'm fairly new, but did experience suffocation once already myself, though out of 5 people playing serveral hours (and log in's and off's) it only happened once, so I considered it a fluke.. I think (best guess) the client and server exchanged location data just ever so slightly off from actual and that's what caused it. I broke the brick that I 'was in' and was fine, and was right where I logged out, it just had me you know, kinda sorta in the wall next to where I was at, lol.