World created without clicking the "Create" button when created a world template.

Summary:

    Worlds are created without clicking the "Create" button when importing world templates from external sources or downloading world templates from the market.

Steps to Reproduce:

    1.Click on the "Create" button in the world list ;

    2.Click on any of the world templates in "My world templates" ;

    3.Click to return to the world list.

Observed Results:

    The world has been created from the world template.

Expected Results:

    World templates should not be created without clicking the "Create" button.

Note:

    This bug is only triggered on first startup, and can be triggered again after a reboot.