Product content disappears upon variant selection

[qzminski]

The product content disappears upon the variant selection. From my observations it happens only if there is a debug bar enabled on the page - otherwise it works perfectly fine. The DOM is affected in the following way:

Before variant selection (default view):

<div class="mod_iso_productreader block">
    <div class="product">
        <!-- TEMPLATE START: templates/motacc_shop/iso_reader_bodis.html5 -->
        ... product content ...
        <!-- TEMPLATE END: templates/motacc_shop/iso_reader_bodis.html5 -->
    </div>

    <p class="back"><a href="javascript:history.go(-1)" title="Zurück">Zurück</a></p>
</div>

After variant selection:

<div class="mod_iso_productreader block">
    <div class="product">
        <!-- TEMPLATE START: templates/motacc_shop/iso_reader_bodis.html5 -->
        <!-- TEMPLATE START: templates/motacc_shop/iso_reader_bodis.html5 -->
        <!-- TEMPLATE END: templates/motacc_shop/iso_reader_bodis.html5 -->
    </div>

    <p class="back"><a href="javascript:history.go(-1)" title="Zurück">Zurück</a></p>
</div>

The image from this comment ideally shows the situation: #1451 (comment)