I copied an answer of mine from SO to SD-CD, so I checked the HTML sources of the webpages on both websites to compare them, and found several issues with the CD page, some of which concern OpenGraph.

• Software Development Codidact Q/A
• Stack Overflow Q/A

The problems I found in the HTML source for CD's page:

• <meta property="og:type" content="website"/> is missing
• <meta property="og:image" .../>'s URL is broken
• <meta property="og:site_name" .../> is missing