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Editorial Team
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Asked: 2026-06-15T02:49:30+00:00

I have a dropdown menu inside a nav-collapse. When I reduce the window’s width

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I have a dropdown menu inside a nav-collapse.

When I reduce the window’s width (eg: 700px), the navbar correctly collapses, then I click on btn-navbar to un-collapse it, then I click on the dropdown, but it does not drop down, the menu does not show. If then I collapse and un-collapse again, the dropdown starts working.

The same happens when the window’s width is small from the beginning.

It’s like the height of the collapsed part was fixed at the beginning, and it doesn’t let the dropdown do its thing.

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="content-type" content="text/html; charset=utf-8" />
        <link rel="stylesheet" type="text/css" media="screen" href="css/bootstrap.css" />
        <link rel="stylesheet" type="text/css" media="screen" href="css/bootstrap-responsive.css" />
        <script src="js/jquery.js"></script>
        <script src="js/bootstrap.js"></script>
    </head>
    <body>
        <div class="navbar">
            <div class="navbar-inner">
                <div class="container">

                    <!-- .btn-navbar is used as the toggle for collapsed navbar content -->
                    <button class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                    </button>

                    <!-- Be sure to leave the brand out there if you want it shown -->
                    <a class="brand" href="#">Project name</a>

                    <!-- Everything you want hidden at 940px or less, place within here -->
                    <div class="nav-collapse">
                        <ul class="nav pull-right">
                            <li class="dropdown">
                                <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                                Anonymous <b class="caret"></b>
                                </a>
                                <ul class="dropdown-menu">
                                    <li>
                                        <a href=''><i class='icon-chevron-right'></i> Login</a>
                                    </li>
                                    <li>
                                        <a href=''><i class='icon-plus'></i> Register</a>
                                    </li>
                                </ul>
                            </li>
                        </ul>
                    </div>

                </div>
            </div>
        </div>
    </body>
</html>

Bootstrap v2.2.0

Firefox 16.0.2

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1 Answer

  1. Editorial Team

    A lot of people were reporting this as a bug on the repo (eg. Issue #5671, Issue #5890, Issue #6019).

    In response to #5671, someone points out that as per the docs on responsive Navbar, when using the class navbar-collapse you must also include collapse. Seems that your example suffers from this same (albeit easily overlooked) flaw.

    Here’s a working example of your code, the only difference being adding the collapse class:

    Plunker

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