I'm currently on the 1.19.0 version of the craftoria modpack, with some additional mods I'll list below, and I'm experiencing a bug where a modded item, or something, is causing the chunk to not load once I leave the area. Originally, me and my friends disconnected from the server saying that there was a network protocol error, and I installed a mod that prevents this from happening, but it also shows an unloaded chunk once I leave the area. I'm not sure what is causing this as we've never had this problem before.
Some of the mods I've added:
Man of Many Planes
Productive bees
Sodium and its addons
Network Protocol Disconnect
I doubt these mods conflict with some of the mods in the modpack since it never caused any issues for me. My guess is that one of the deco mods caused this issue to happen.