If you take a look at your source code and more particulary to the meta tag og:description
the HTML tags are escaped. This is refering to the OpenGraph Description
by Facebook
<meta property="og:description" content="<h2>Details</h2>
<div class="std"><p> Regional Barossa and Eden Valley wines, grown on family owned vineyards with the utmost care taken from the vineyards to the bottle. This ensures every customers purchase a bottle of Thorn-Clarke wine, they know where it is from, the care taken and the outstanding quality and value offered.
</p>
<p>
The 2011 Terra Barossa Cabernet Sauvignon has aromas of green bean, dried herbs, and dusty cedar like oak. The palate has a lively blackcurrant character on the front palate. This fruity character is balanced by spicy, chocolatey oak. The wine has varietal grainy tannins which are persistent well after the wine has left the mouth.
</p>
<p>Current Vintage 2011</p>
<ul>
<li>Vintages may vary from time to time and when delivered. Every effort is made to ensure the current vintage is displayed, however variations can occur.</li>
</ul>
</div>
" />
There is an actual opened issue for that on Magento 2
Github
: https://github.com/magento/magento2/issues/6776
You can upvote the issue on Github to put it forward.
If you want to do a temporary fix you can override the template and use the fix explained in the issue
$block->stripTags() is missing in
vendor\magento\module-catalog\view\frontend\templates\product\view\opengraph\general.phtml
How to override template: http://devdocs.magento.com/guides/v2.1/frontend-dev-guide/themes/theme-inherit.html#theme-inherit-templates
EDIT
1/ Copy the content of the file
vendor/magento/module-catalog/view/frontend/templates/product/view/opengraph/general.phtml
in your theme directory
app/design/{Package}/{theme}/Magento_Catalog/templates/product/view/opengraph/general.phtml
.
In that way you wil override Core template.
2/ Change the line
<meta property="og:description" content="<?php echo $block->escapeHtml($block->getProduct()->getShortDescription()); ?>" />
By (I add the $block->stripTags()
)
<meta property="og:description" content="<?php echo $block->escapeHtml($block->stripTags($block->getProduct()->getShortDescription())); ?>" />