eg: https://apps.ubuntu.com/cat/applications/smplayer/ has a link with the graphic entitled "available on the Software Center", the description on hover is "Get it from the Ubuntu Software Center" and the URL is apt://smplayer, which cannot be opened in Muon if it is specified as the application to use. Reproducible: Always Steps to Reproduce: 1. Select an application at https://apps.ubuntu.com/cat/ to install 2. Select "available on the Software Center" link 3. Specify Muon as the application to use Actual Results: Muon silently fails and doesn't even actually open. Expected Results: Muon would open, and try to install the selected software.
These should be using appstream urls.