Linkedin: Sharing URL Summary not appearing : <p>I'm not sure if this is new behaviour or if it didn't work at all.
So I'm using the LinkedIn Customized URL feature, you can look it up <a href="https://developer.linkedin.com/docs/share-on-linkedin" rel="noreferrer">here</a>. The URL looks like this:</p>

<p><code>https://www.linkedin.com/shareArticle?mini=true&amp;url=http://developer.linkedin.com&amp;title=LinkedIn%20Developer%20Network&amp;summary=My%20favorite%20developer%20program&amp;source=LinkedIn</code></p>

<p>Once I share the URL the provided <code>summary</code> is not shown in the post preview:</p>

<p><a href="https://i.stack.imgur.com/vuf0z.png" rel="noreferrer"><img src="https://i.stack.imgur.com/vuf0z.png" alt="LinkedIn Screenshot containing a shared post sample"></a></p>

<p>So I tried with other services like Youtube, Reddit etc. and all posts <strong>do not</strong> include the provided summary.</p>

<p>Unfortunately I can't provide you the open-graph tags I used on my site as it's running in a corporate environment and I'm not sure if I can provide these snippets as of now.</p>

<p>However, running linkedin's <a href="https://www.linkedin.com/post-inspector/" rel="noreferrer">Post Inspector</a> shows that it detects my summary without problems:</p>

<p><a href="https://i.stack.imgur.com/fsczt.png" rel="noreferrer"><img src="https://i.stack.imgur.com/fsczt.png" alt="PostInspector Output"></a>
<em>Values are in German if anyone wonders...</em></p>

<p>So my quick and fairly simple questions, which might be answered in a comment as well, are:</p>

<p>Did linkedin change something on their side? 
Is there some other undocumented property which neither youtube nor me included in the customized URL and therefore the summary does not show up?
Is there any post from linkedin developers which note this change?
Was it like that all the time or is it just a temporary thing? </p>
