Install Infdev.
Create a world.
Soon after you create a world, the game has a high likelihood of crashing. The game likely saves, as the world is loaded on 1.21.8
Whether or not the game crashes, the “bug” still happensExit Infdev, and join 1.21.8
The world you just made in Infdev should say “Failed to load world summary”
Thats how to reproduce the “bug”, however, it is likely that Infdev worlds cannot go to 1.21.8.
Bug or not, I need an explanation.
Comments 3
Old worlds are not supported in newer versions. Support for loading older worlds has been progressively removed over time. See comment by cat67315 as a way of avoiding this issue.
This report should be closed with a resolution “working as intended” or “invalid”.
Hi!
Thank you for your report!
However this issue is Invalid. Infdev version is not supported.
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The best way to upgrade infdev worlds to 1.21.8 is to upgrade in small chunks of versions. Here is my recomended minecraft versions to upgrade to: infdev → Alpha 1.2.6 → Beta 1.7.3 → 1.8.9 → 1.21.8. Make sure to back up the world before doing this.