On mobile view hamburger icon shrinks when user clicks outside of it

Problem/Motivation

While going through the theme for issues I found out that when clicking outside the hamburger icon shrinks it out and this is not the case while closing the hamburger when clicking on the hamburger icon itself.

Steps to reproduce

Install the theme and add content, menu items, footer menu etc.

Proposed resolution

Need to fix this behaviour of shrinking the hamburger icon

Remaining tasks

none

User interface changes

yes

API changes

none

Data model changes

none