Zamfir

Update: It was the roof. So I tested it out and basically, if the spawn is obstructed and you respawn, the game won't care and will spawn you inside of walls, at least at first. Upon leaving and re-entering a world tho, the spawn location will be changed if it is obstructed. What happened is the roof of the shack I built was in the way, but since it was only one block thick at first I respawned there without noticing the obstruction. Upon leaving and re-entering the world one day later, the game probably detected the obstruction and changed the world's spawn. And that new location just happened to be on top of a glacier.

Not running any mods, playing the 1.19.8 version. It was the first thing I thought about and checked, but there's 3-4 blocks distance between the spot and the walls. Doubt it could have been that. Unless it's the roof? I did a little digging so the roof might be a bit low. Will try to reproduce on another world, and see if that's the problem.

Thanks for answering. That's the thing, you see? The coordinates changed, At the start of the game X:0 Z:0 were in one spot, two days later they were 100 blocks away, and the original location became X:-38 Z:100, which is why I was completely and utterly confused. Coordinates changing is not something you expect in real life (even though it is a geological possibility) let alone in a video game. What I'm searching to know is if this is a feature and how it works, so I can prepare for the next time I respawn on the tip of a mountain with no safe way down and no usable resources to make such a trail. Or even better, to avoid such an outcome altogether.

In a new world, I set the respawn radius to zero and went ahead to build a shack to make sure that I don't respawn to a bear, a pack of wolves, or other stuff as I frustratingly often do. Then I went on my way to make a base and all a bit further. Two irl days later, I die only to respawn 100 blocks away, on top of the mountain with no way down. Then I check only to find out that for some ungodly reason the word spawn changed? The 00 coordinate was right there, right where I built that shack. So why, in god's name, did it change? Is it a bug? A feature? The game was singleplayer, so there was no one to change the worldspawn, and I sure didn't do it.