How do I get the detailed view back?

I'm not sure what I did or what happened but I can't get the task details back even after a full restart. Stuff like date, time, alert, repeat, and all the quickactions are missing. How can I get those back?

Just a hint: Whatever I did, it must've been a keyboard shortcut because it happened out of nowhere and while I wasn't using/was barly using the mouse.

You can click the focus button below to show them again.

Thanks!