The bug

The minecraft.net Marketplace pages about content and the pages about creators have a section for sharing the page.
For example:

• https://www.minecraft.net/en-us/pdp?id=11b8af30-4bc9-4b4a-8d6c-4945efe642cc#
  
• https://www.minecraft.net/en-us/creator?name=fall%20studios
  

There are two issues with this:

• The Reddit and Twitter buttons use HTTP instead of HTTPS links
• The sharing buttons only insert the URL of the current minecraft.net page if you left click them. If you middle click them or right click and select to open it in a new tab or window (on Firefox), then the URL part is missing, e.g. it just opens "http://twitter.com/share?url=".

Also note that "SHARE THIS ITEM" might not be a good description, and for example the German translation is not rather irritating because it has "item" literally translated to "Gegenstand".