For once i actually am able to find a bug report for an issue i’m having without having to post my own first, i will add that this was also happening for me on mac for the 1.18 pre-releases alongside the full release
This is a completely different issue from the one that [Bot] Arisa linked to. Perhaps the bot made a mistake since this one is an issue from after downloading the new launcher on windows while that one is just an issue for logging into the launcher on mac
Destriker, this is an old world made infinite, and that should update it to 1.18 should it not? Since it is no longer an old world type after you make it infinite