Source popover is very wide
If a source popover's items have more than 2 tags, it becomes a bit unwieldy:
I'm not sure what options we have here, but something that would help at least a little bit is reducing padding inside the tags and horizontal spacing between them.
In general my feeling is that the tags are too large and prominent compared to the primary element (the name of the source). I wonder if changing the row layout to having the tags below the title and having them be smaller would help?
cc @aday