its something to do with the way the search items display at the top of the screen.
They fill the height of the box they appear in and look sort of heavy, solid, and thick or bulky especially with the white background.
Maybe they should not appear in the text entry box but in their own separate space.
For Instance, each search item also appears in the list view, in the middle, as well as in the input box.
Leave them out of the input box.
Why not change the way they appear in the list box area between the input box and the keyboard?
Design them in the "button" format the way they look now in the first picture you uploaded.
You can keep the X "kill" button inside each label : "test x" "new x" "hello x" and "video x".
This would mean that the search items will appear like links in a chain in the area where the list view now is.
Same as they now look in the place they are appearing.
So they appear like shown below this.
Now you can make that middle panel all white background or what you like.
That's the best I can do as trying to make a sensible description of what I mean.
If it doesn't make sense send me a PM and I'll make a drawing.
What I am suggesting should have a new look.
You would just have to think about what happens when the area between the input box and the keyboard fills up . . . .
Either limit the number then start to remove early ones or scroll the view in the panel.
These "buttons" or labels, the result of typing in a search item, would of course be different widths as in your signature or as seen below.
And, also, less height as well (slimmer looking). ->