Enablin the config options to require a lit campfire to respawn and extinguish campfire upon respawn causes the respawn point to fail entirely. If it makes a difference, I've been using Soul campfire only as well. Kinda seems like the campfire extinguishes before the player actually respawns, thus preventing it.

Minecraft 1.16.5, Home Camp 1.0.3, Fabric ver 0.11.3. All latest afaik.