Tried to list this under Realms errors, but they don't have an option for snapshots. Sorry if this is the wrong place.

When I try to open the Realms page from 1.18 pre-release 5 or 6 (probably others too), it gives me the following error message:

I believe the issue is that 1.18 pre-release 6 is not outdated, but ahead of date. This very much is the most recent possible version of Minecraft. The error message should say something about Realms not supporting versions that aren't fully released, or at the very least it shouldn't be giving me false information about how to fix the problem.