Terrain shaper factor forces land below positive y 50 to be solid by ignoring values specified in slider bottom section (excluding offset).
Data packs attached below contains following:
-overworld noise settings using terrain shaper factor at 0.4
-overworld noise settings using terrain shaper factor at 0.0
This issue prevents us from getting world generation reminding of large floating islands kind.
Related to MC-242336
Closing as Cannot Reproduce given world generation formats and implementation have changed substantially since this report. Please feel free to submit a new report if this is still an issue you are encountering - thanks!