When you create a new world and set it on hardcore, the allow cheats and bonus chests buttons are in an unclickable state. But when I go in the same screen to world type flat and choose customize. And then choose cancel. The button states of the allow cheats and bonus chest buttons are clickable. But they don't active. Only the button states work.
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Duplicate of MC-10209, please use the search function to see if your bug has already been submitted. Currently over 54% of tickets are being closed as duplicate.