I am having this issue on Xbox 1 and Windows 10, through several versions so far with the same world. I have I've uninstalled and reinstalled it and tried many things with the server owner with no luck at all.
I can load local worlds and Other Minecraft Realms. The only problem I have is with this one Realm. I think it's my account because when I have tried both on my computer and Xbox and it still gets stuck. Other people are still able to join it however, I'm the only one with this issue.
Matthew, I have watched the video but unfortunately, I'm in creative mode and I'm not visible to my friends. They have no way of interacting with me to fix it.