It would probably be best to report the crash in the "Software and Updates" tool separately against the software-properties package (https://launchpad.net/ubuntu/+source/software-properties).
In the meantime you'll want to select "Pre-released Updates" on the "Developer Options" tab at the end of the window, rather than the "Updates" tab as shown in your screenshot.
It would probably be best to report the crash in the "Software and Updates" tool separately against the software-properties package (https:/ /launchpad. net/ubuntu/ +source/ software- properties).
In the meantime you'll want to select "Pre-released Updates" on the "Developer Options" tab at the end of the window, rather than the "Updates" tab as shown in your screenshot.