Mobile menu issues,when scrolling

The website its build on WordPress.
'' menu hides while scroll down, because I think called function on resize: $(window).resize(function() { screenSize(); }); just want to let you know that scrolling page also invoke resize function, that's why it closes menu. Hope you find you mistake.''
I think I have the same issue. When you open my website on mobile device, and when you start scrolling the menu its not disapiering, but when you reloud page, its starting disapiering...