close menu on mouse out

Hi,
I noticed that when you open the menu the image slider shifts to the right, so the right arrow is no longer fully visible (and it’s hard to click on it). What you have to do now is first close the menu and then click the right arrow if you want to see another picture.
This could be improved by closing the menu automatically when the mouse isn’t over the menu sidebar or over the menu trigger.
Has anyone done this? Or maybe is there another solution to solve this?
Thank you!