Almost every app in existence (on Android anyway) when you drag down and reach the top, it refreshes the page. For those of us with update-a-d-d, it's habitual.

Not clickup! It opens a search screen. This is counter-intuitive, and creates a hassle as you figure out how to close that search screen.

Keep it simple, the search bar is right there. I can access it just fine if I need it.