Input groups bigger than input in Bootstrap 3 using Jumbotron container

Question

I\'m experimenting a strange behavior with Bootstrap 3 input groups. When I add an input-group-addon (text or icon) to a form inside a jumbotron, the input-group height is bigge

Answer 1

Last night, I had exactly the same problem. None of the fixes mentioned above worked in my context. What finally did do the job was setting the margin to 0:

.input-group .form-control {
    margin: 0px !important;
}

Perhaps this helps someone with a similar problem!