I was playing on Bedrock Realms and suddenly I couldn't mine or attack anything. I tried all my items in the hotbar and none worked. I also couldn't interact with anything or place any blocks down. I restarted Minecraft and my Xbox but it didn't work. There was about 4 people on the server including me. Other players and mobs could attack me. The only way to fix it was to delete the world and put the new code in again.