no vertical scrollbar for multiple select

Created by: radzhome

If you add 'form-control' to the multiple select, the scrollbar disappears but the box is still scrollable. I found this bug in the latest version of Chrome and Safari, Firefox works. Try it:

<select multiple="multiple" id="id_file_list" name="file_list" class="form-control">
<option value="Press_1.png">Press_1</option>
<option value="Press_2.png">Press_2</option>
<option value="RO_IN.png">RO_IN</option>
<option value="RO_Store.png">RO_Store</option>
<option value="Store.png">Store</option>
<option value="Turb.png">Turb</option>
<option value="UV1.png">UV1</option>
<option value="UV2.png">UV2</option>
</select>

get rid of "form-control" class and the scrollbar is there.