I know that, but I'm saying that it's happening to me, the same bug.
This happens even on custom jars. It's happening on my 1.17.1 Fabric server at ideaspace.apexmc.co.
Same on two of my Windows 10 devices. I found a fix though.
Create a new world.
Download your world from the Realm.
Get a program that can edit NBT files.
Open the downloaded Realm in the NBT editor program that you downloaded.
Find the world settings.
Then find the MinimumRequiredClientVersion folder.
It will be 12.1.1.1
Change it to 12.0.28.1.
Save your world.
Open Minecraft (for Windows 10)
Load the world up.
It should work. I have been playing on my downloaded Realm for a few days and have not found any problems. I think Microsoft may have released a bug-fix update for Realms earlier than for the game itself.
This only works on Windows 10, as far as I am aware.
Yes, it is. It's not just on your model. My friends have the same problem.
Marketplace?
It's working on the Windows, not the iOS.
Okay, I don't think that will work, but I will try.
It doesn't work on all iPads, not just iPad Air 2.
I believe this may be an issue with the 1.17 and later client, as joining my server with 1.16.5 with ViaFabric resulted in no issues.