Opening a modal with an input causes error e.update is not a

Expected behavior I use the free/mdb.min.js and the pro module /modules/select.min.js in order to reduce the loaded resources. On my page there is an input field and a select. When I open a modal dialog that contains another input field then I would expect no errors.

Actual behavior The browser console shows the following error:

Uncaught TypeError: e.update is not a function

When I use the full mdb.min.js that contains all the pro modules then the error does not show up.

Resources (screenshots, code snippets etc.)

Here is a sample page to reproduce the error:

<link rel="stylesheet" href="~/lib/MDB5/css/mdb.min.css" />
<script src="~/lib/MDB5/js/free/mdb.min.js"></script>
<script src="~/lib/MDB5/js/modules/select.min.js"></script>
<script src="~/lib/MDB5/js/modules/modal.min.js"></script>
<div class="form-outline">
    <input type="text" id="form12" class="form-control" />
    <label class="form-label" for="form12">Example label</label>
</div>

<div class="mt-4">
    <select class="select">
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
        <option value="4">Four</option>
        <option value="5">Five</option>
    </select>
    <label class="form-label select-label">Example label</label>
</div>

<div class="mt-4">
    <button type="button" class="btn btn-primary" data-mdb-toggle="modal" data-mdb-target="#exampleModal">
        Launch demo modal
    </button>

    <div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
        <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
            <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
            <button type="button" class="close" data-mdb-dismiss="modal" aria-label="Close">
                <span aria-hidden="true">×</span>
            </button>
            </div>
            <form>
            <div class="modal-body">
                <div class="form-outline">
                    <input type="text" id="form7" class="form-control" />
                    <label class="form-label" for="form7">my text</label>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-mdb-dismiss="modal">
                Close
                </button>
            </div>
            </form>
        </div>
        </div>
    </div>
</div>