Realms will sometimes take a bit of time to update after a new version has been released. If your Realm hasn't updated yet, please be patient as we roll out the update to all Realms. Once all players are running the latest version, this issue should resolve itself. ^FF
Please visit our bug report site to see if the problem has already been reported: bugs.mojang.com. You can upvote if the issue hasn't been resolved. If you think you've found a new bug, visit our help site here on how to submit a report! aka.ms/MCBugTrackerHelp ^AC
To keep your information secure, please complete our request form at aka.ms/Minecraft-Support so we can quickly and safely assist with your question! ^TK