Bug? A New Card with 4 Options: Again, Hard, Good, Easy

Hello guys, I will be very appreciated for your replys.

As shown in the picture, this is a new card but showing 4 options: Again, Hard, Good and Easy, just like a reviewing card. This situation appeared both on ankidroid and ankiweb, I checked changelog and docs and still remain confused, could someone explain to me? Many thanks!

Most likely you enabled the experimental scheduler, which, among other things, new cards include the hard button.


Thanks for your reply! It works!