zui 1.10 .0下拉选择器在 input-group 中显示有问题

[jaivehall]

未下拉时显示正常:

显示下拉选项时不对:

源码如下:
<div class="form-group"> <label class="col-sm-2">Customer</label> <div class="col-sm-10"> <div class="input-group"> <select class="form-control picker-select" name="apiCustomerType"> <option value="">Partner</option> <option value="1">Company</option> </select> <span class="input-group-addon fix-border fix-padding"></span> <select id="apiFormCustomerList" class="form-control picker-select" data-drop-width="100" name="apiCustomer"> <option value="1">...</option> </select> <span class="input-group-btn"> <button class="btn btn-default" type="button"><i class="icon icon-plus"></i></button> </span> </div> </div> </div>

JS 初始化下拉选择器:
$('select.picker-select').picker({ ... })