By the way, this also prevents you using respawn anchors in the nether, I am glad that it does this, since that would be against the point of me adding it to my worlds/easily ignorable, but I feel that it should be noted that this doesn't JUST affect the bed, instead it forces you to spawn at world spawn, ignoring whatever respawn method you have set.

I tested this by first sleeping in a bed in the overworld and /killing myself, sure enough it spawned me at world spawn, not the bed, with the obstructed bed/anchor message

I then went into the nether and placed down a respawn anchor, charged it and attuned myself to that, /killing myself again, which sent me to the world spawn in the overworld with the obstructed bed/anchor message

I wish DanTDM will have this datapack. Stupid Vex and Evoker! Made him lost his Hardcore world!
Even though I am blaming Mojang for having a totem of undying only have one use and have Hardcore Mode can't respawn like in normal Survival Mode!