INFRA-110 Demo sites should hide extensions from "civicrm/tools/extensions"
It seems to me that it is a bug to not filter the Extensions made available automatically from civicrm.org so that only compatible versions are displayed. If people want to force the system to install an extension that is not explicitly compatible, they should have to do that via a manual download.
I was surprised to find that extensions that are explicitly limited to prior versions are showing up as available for installation. See the attached image just captured from the Drupal demo site.
Original author: joemurray