We can't select the not supported world in Singleplayer menu.
I don't wan to load these not supported worlds. I just want to do something such as delete them, make backups, or re-create them.
There might be more solutions to prevent player load those worlds, not only forbid to select the world.
Thank you for your report!
We're tracking this issue in MC-214779, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
-- I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.