This is not an issue with SonarQube itself, but with the https://docs.sonarqube.org/ site. When I post a link to this site here in the forum, I get the following message when OneBox tries to render a preview:
Thanks for bringing this up. We’re in the progress of infrastructure upgrades for our sites. While I can’t give you a date for the move of the SonarQube docs, I can say that I expect it to get better… “soon”. We’ve already moved the SonarCloud docs, and while we’re still polishing, it’s already better:
(And yes, that default image preview is on the radar.)