Ctrl+F should go directly to search box
On Windows Store app, pressing Ctrl+F brings up the search bar, but you still have to press the search icon to open the search box to actually type what you want to search for. That means I have to press Ctrl+F and then click the search button. It is an extra step that is just annoying.
I just figured out that you can press "enter" after Ctrl+F and start typing. Still, I agree that it is the general standard that you should be able to start typing immediately after pressing the hotkey.