Hello Kitty DLC shows in “Owned” and in World Creation as template, however DLC content does not generate with new world created.
All modes and types/difficulty levels were tried. When checking “Storage” in Settings, Hello Kitty Adventure worlds are visible in this view, but are not visible in launcher.
Cleared 10+GB of storage on iPad in case that this was causing an issue, but not resolved. Restarted both the Minecraft app and device multiple times. Bug appears both while logged into an account and when logged out.
This bug also occurs on Galaxy S20 with all other Marketplace DLC worlds.