Slide Out Menu Click Item Closes Menu

When the slide out menu is displayed and I click on a menu item which has sub menus, it will expand to show the sub menus then instantly close the entire slide out. To prevent this, instead of clicking the menu item, I have to click it's arrow. This seems like a bug to me. Is there a way to prevent the auto closure of the slide out when I click the menu item in order to see the sub menus?

Edit: Found my problem. I just replaced the menu item link with a # and it solved the issue.