Why is autofill turned on during promos?

I think the title is pretty much self explainatory, here are the screenshots anyways...

https://gyazo.com/9898c2dbb44bb0e9571ad673c63cff62

https://gyazo.com/d431b1aeae0926b0e5af283648fa16b0

You can see the time on the bottom right corner.