Missing preview image

[3Dickulus]

using v1.2.11

admin can see embeded youtube preview image

<div class="oharaEmbed youtube" id="oh_NOS95oFPMT4" style="width: 640px; height: 360px; background-image: url(&quot;//i.ytimg.com/vi/NOS95oFPMT4/hqdefault.jpg&quot;); background-size: cover;">
    <noscript>
        <a href="//www.youtube.com/watch?v=NOS95oFPMT4">//www.youtube.com/watch?v=NOS95oFPMT4</a>
    </noscript>
<div class="youtube_play">

normal users and guests only see black background

<div class="oharaEmbed youtube" id="oh_NOS95oFPMT4" style="width: 640px; height: 360px;">
    <noscript>
        <a href="//www.youtube.com/watch?v=NOS95oFPMT4">//www.youtube.com/watch?v=NOS95oFPMT4</a>
    </noscript>
</div>

in transition to SMF 2.0.17