When recreating a world, the listed default values for gamerules mimic any changes you have made

If you create a world, and modify any game rules (either during world-creation or after), recreating the world will show the incorrect defaults for those gamerules. For example, the default for KeepInventory is false, and when you hover over that gamerule during world creating it will say “Default:false.” If you then change it to be true, then recreate that world, during the world-creation for that recreation it will say “Default:true.”

This could cause issues if someone wants to recreate a world and revert any gamerule changes but do not know the defaults, since the relevant listed defaults will be wrong.

The attachments “OG1.png”and “OG2.png” show the normal defaults when creating the original world.
”Change.png” shows the change to those gamerules in the original world.
”Copy1.png”and “Copy2.png” show the incorrect default values when creating the recreation.