Mega menu need double click for parent item which have submenu.

Hi There,
When I select navigation style as mega menu from template manager > t3_blank
then experiencing problem as,
I click on the parent menu item which have some submenu, it is not working from first time
after second time clicking on then it goes to expected page.

Note: it seems when i click on parent item then if collapse the sub menu (as it was showing on mouse hover) and for second time click it receive the click event for going expected link.

Expected result: I was expecting all action with single click. Is it making sense?

Thanks in advance