custom content repeated twice using blocks

Product page where the brand logos are added:

<!--* Main heading and introduction and graphic *-->
<perch:before>
<perch:template path="content/blocks/introduction_block.html" />

<!--* Keypoints *-->
<div class="keypoints keypoints--para">
    <h2><perch:content id="keypoints-heading" type="text" label="Heading" required="false" title="true" /></h2>
    <p class="keypoints__intro"><perch:content id="keypoints-intro" type="textarea" label="Introduction Text" html="false" size="s" /></p>

    <ul>
    <perch:repeater id="keypoints" label="Keypoint items">
        <li>
            <div class="keypoints__image">
                <img src="<perch:content id="keypoint-image" type="image" width="215" label="Image" />" alt="<perch:content type="text" id="alt" label="Description" required="false" help="Image name" />" srcset="<perch:content id="keypoint-image" type="image" width="215" label="Image" density="2" /> 2x, <perch:content id="keypoint-image" type="image" width="215" label="Image" density="3" /> 3x">
            </div>
            <h3 class="keypoints__title"><perch:content id="keypoint-title" type="text" label="Keypoint title" /></h3>
            <p class="keypoints__text"><perch:content id="keypoint-text" type="textarea" label="Keypoint text" size="xs" /></p>
        </li>
    </perch:repeater>
    </ul>
</div>

</perch:before>


<perch:blocks>
<!--* Brand logos *-->
<perch:template path="content/blocks/brand_logos_block.html" />

<!--* Text *-->
<perch:template path="content/blocks/text_block.html" />

<!--* Lists used for things like Features or Benefits *-->
<perch:template path="content/blocks/list_block.html" />
</perch:blocks>

Brand logos block template: (content/blocks/brand_logos_block.html)

    <perch:block type="brand-logos" label="Brand logos">
<ul class="brand-logos">
    <perch:repeater id="brand-logos" label="Add a brand logo">
    <li><img src="<perch:content id="brand-logo" type="image" width="125" label="Image" bucket="brands" />" alt="<perch:content type="text" id="alt" label="Description" required="false" help="Brand name" />" srcset="<perch:content id="brand-logo" type="image" width="125" label="Image" density="2" bucket="brands" /> 2x, <perch:content id="brand-logo" type="image" width="125" label="Image" density="3" bucket="brands" /> 3x"></li>
    </perch:repeater>
</ul>
    </perch:block>

Homepage with custom content wanting to load brand logos from products page:

    perch_content_custom('Product Details', array(
        'page' => '/products/*',
        'template'  => 'blocks/brand_logos_blocks.html',
    ));

Homepage custom content template (blocks/brand_logos_blocks.html) which has the required perch:blocks tag pair:

<perch:blocks>
<h3 class="home-title-impact">Big brands and many more.</h3>
    <perch:block type="brand-logos" label="Brand logos">
<ul class="brand-logos">
    <perch:repeater id="brand-logos" label="Add a brand logo">
    <li><img src="<perch:content id="brand-logo" type="image" width="125" label="Image" bucket="brands" />" alt="<perch:content type="text" id="alt" label="Description" required="false" help="Brand name" />" srcset="<perch:content id="brand-logo" type="image" width="125" label="Image" density="2" bucket="brands" /> 2x, <perch:content id="brand-logo" type="image" width="125" label="Image" density="3" bucket="brands" /> 3x"></li>
    </perch:repeater>
</ul>
    </perch:block>
</perch:blocks>

This all displays correctly, meaning a list of brand logos when on my local MAMP setup. But on the live server it loads the set of brand logos twice:

Simplified version of the Local mamp website output:

<h3 class="home-title-impact">Big brands and many more.</h3>
<ul class="brand-logos">
    <li><img src="/admin/resources/brands/beko-w125.png" alt="" srcset="/admin/resources/brands/beko-w125@2x.png 2x, /admin/resources/brands/beko-w125@3x.png 3x"></li>
etc etc etc
</ul>

Simplified version of the Live website output:

<h3 class="home-title-impact">Big brands and many more.</h3>
<ul class="brand-logos">
    <li><img src="/admin/resources/brands/beko-w125.png" alt="" srcset="/admin/resources/brands/beko-w125@2x.png 2x, /admin/resources/brands/beko-w125@3x.png 3x"></li>
etc etc etc
</ul>
<h3 class="home-title-impact">Big brands and many more.</h3>
<ul class="brand-logos">
    <li><img src="/admin/resources/brands/beko-w125.png" alt="" srcset="/admin/resources/brands/beko-w125@2x.png 2x, /admin/resources/brands/beko-w125@3x.png 3x"></li>
etc etc etc
</ul>

Note the live version repeats the block twice?

Any ideas?

Upgraded to 2.8.15 and resaved the regions and still the same. Thomas experienced the same problem, see his comments here:

https://forum.grabaperch.com/forum/10-08-2015-custom-content-using-blocks