How can I make the menu not close when the height changes?

Question

JavaScript

I found an adaptive menu that does not conflict with other scripts. But there was a problem. When the on-screen keyboard appears on your smartphone or simply resizes the window, the menu immediately disappears. I want it to disappear only when pressed. What needs to be corrected there? I don't understand at all.
Link to demo script - studiosr.ru/wp-content/uploads/2015/10/responsive-...

Answer 1

on ipad mini with retina, video games generally goes to the second line in both orientations
, it’s not very clear where you get the on-screen keyboard if there are no input fields