[Evolution] URL in last line isn't highlighted

[Patrick O'Callaghan <pocallaghan gmail com>]

I notice that a URL in the last line of messages (such as the reference
to the list admin page in this message), isn't being highlighted by Evo
2.30.2, i.e. it isn't clickable. I'm sure this used to work in earlier
versions.

Oddly, it does work when I send a test message to myself, so I'm not
sure what's going on.

poc