modal with remote url doesn't display correctly

[Eonasdan]

Since the change with bs3 using a remote url with a modal doesn't display correctly.

<a data-toggle="modal" href="URL" data-target="#MODAL" tabindex=-1>Click Me</a>

<div class="modal fade" id="MODAL" tabindex="-1" role="dialog" aria-hidden="true">
    content ends up here!
</div>

<div class="modal fade" id="MODAL" tabindex="-1" role="dialog" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-body">
                    content should go here
            </div>
            <div class="modal-footer">
                <button class="btn" data-dismiss="modal" aria-hidden="true">Close</button>
            </div>
        </div>
    </div>
</div>

adding

<div class="modal-dialog">
    <div class="modal-content">
        <div class="modal-body">
            ...

to the remote url fixes the issue

[cvrebert]

This is a deliberate change in semantics that is already mentioned in the migration docs.