There are times when we need some forms in dropdown menu, e.g. login/register/settings. The implementation is very easy in Bootstrap 3, however with form fields inclosed in
<form> tag. But if for some reason we cannot use
<form> wrapper (take instance of moonshine technologies .NET Web Form or JSF where entire page is wrapped in single
<form>) then there is a peculiar behavior that dropdown get closed when you click on input fields.