Bootstrap Vertical Menu下拉菜单突出显示NEXT菜单项，但不突出显示CURRENT PARENT的子菜单

Question

...所有

所以这是我的BOOTSTRAP代码，用于垂直DROP DOWN侧栏菜单：

            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="top-nav">
                <ul class="nav navbar-nav">
                    <li><a href="#slider">Home</a></li>
                    <li><a href="#about">About Us</a></li>
                    <li class="dropdown" id="dropdown1">
                        <a href="" class="dropdown-toggle" data-toggle="dropdown1" role="button">Projects <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                            <li class="page-scroll"><a href="#dev">In Development</a></li>
                            <li class="page-scroll"><a href="#preprod">Pre-Production</a></li>
                            <li class="page-scroll"><a href="#prod">Production</a></li>
                        </ul>
                    </li>
                    <li><a href="#showcase">Showcase</a></li>
                    <li><a href="#team">Dream Team</a></li>
                    <li><a href="#contact">Contact</a></li>
                    <li class="dropdown" id="dropdown2">
                        <a href="" class="dropdown-toggle" data-toggle="dropdown2" role="button">My<br>Entertainment <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                            <li class="page-scroll"><a href="#gloprojects">Projects</a></li>
                        </ul>
                    </li>
                    <li><a href="javascript:;" onclick="funcs.btnFunc('privacy', '10', 'null', 'null')">Privacy Policy</a></li>
                    <li><a href="javascript:;" onclick="funcs.btnFunc('terms', '9', 'null', 'null')">Terms of Use</a></li>
                </ul>
            </div><!-- /.navbar-collapse -->

所以这里的图像最能显示正在发生的事情：

然后当您将鼠标悬停在SUB MENU上时，NEXT MENU会突出显示...

这非常令人困惑......

有什么想法吗？

由于