Here is another screenshot that shows packages.ubuntu.com which surprisingly prefers Microsoft fonts ("Verdana,arial,helvetica,sans-serif"). Verdana and arial aren't found on the system so helvetica is used which is mapped to Nimbus.
Here is another screenshot that shows packages.ubuntu.com which surprisingly prefers Microsoft fonts ("Verdana, arial,helvetica ,sans-serif" ).
Verdana and arial aren't found on the system so helvetica is used which is mapped to Nimbus.