What's fixed:
1.9 Snapshots (15w34c) added "Version: 15w34c" to the world selection screen screen, indicating the last MC version the world was loaded with. Older maps say "Version: unknown." Also If you hover over a world ICON you get the popup message "Don't forget to backup this world before you load this snapshot."
What's still broken:
Unfortunately, There is no popup, over the text area so if you select a world by text, and press the Play button, you never see the warning.
Proposed Solution: Add the same popup message to the "Play Selected World" button when appropriate OR Better, drop the popup and add a message area above the Buttons, to display any warnings, alerts or error messages.
Linked issues
Comments 3
With respect and just to be clear. Are you saying Mojang "explicitly" decided to make it possible to open worlds without receiving a warning that you added elsewhere on the screen?
If the intention of adding the message was to help prevent users from corrupting worlds, I would point out you have not fully realized that goal. I would kindly ask you to re-visit that logic. I think we are talking about maybe one line of code.
true but the feature was added in 15w32b