The search bar close, "Highlight All", "Match Case" buttons moved to the right side of the screen while the addonbar close button is still on the left side.
At least with the addons I have installed moving the close button of the addons bar is not possible.
I prefer the old position of the search bar buttons. The new one forces me to move the mouse to the other edge of the screen and also look at the opposite sides of the screen.
Unlike other elements it isn't possible to change the positions of the search bar buttons.