Loading the world causing multiple issues.

This issue is coming from both this version and the previous version of the preview.

When loading a world that had been copied from realms (issue is persistent in the realm as well) in a creative superflat, my inventory got cleared, and my FoV was set extremely high, as if I had speed 100 or so (drinking milk had no effect), and when not flying, I would run extremely fast, but could not sprint. My character was set to member as well, taking away my ability to use commands, command blocks, etc. I also could not place or break them either. The issue also persisted when transferring the world onto my Xbox Series X, where the same problem occurred, but I was able to place and break command blocks. When loading in, I would also be teleported to the world spawn (0, 0), about 25 blocks in the air. Sometimes this would go away after reloading the world or game, but now it is completely stuck to the issues with the FoV, speed, command blocks, etc.