Fixed for next release. Edit file 'environment/functions/general.php' lines 570-574, change from:
//Replace full urls with hyperinks. Avoids " character for already rendered hyperlinks
$text = preg_replace('@([^"\']|^)(https?://([-\w\.]+)+(:\d+)?(/([\w/_\-\.\+]*(\?[^\s<]+)?)?)?)@', '$1<a href="$2" target="_blank">$2</a>', $text);
//Convert every word starting with "www." into a hyperlink
$text = preg_replace('@(>|\s|^)(www.([-\w\.]+)+(:\d+)?(/([\w/_\-\.\+]*(\?[^\s<]+)?)?)?)@', '$1<a href="http://$2" target="_blank">$2</a>', $text);
to:
//Replace full urls with hyperinks. Avoids " character for already rendered hyperlinks
$text = preg_replace('@([^"\']|^)(https?://([-\w\.]+)+(:\d+)?(/([%\w/_\-\.\+]*(\?[^\s<]+)?)?)?)@', '$1<a href="$2" target="_blank">$2</a>', $text);
//Convert every word starting with "www." into a hyperlink
$text = preg_replace('@(>|\s|^)(www.([-\w\.]+)+(:\d+)?(/([%\w/_\-\.\+]*(\?[^\s<]+)?)?)?)@', '$1<a href="http://$2" target="_blank">$2</a>', $text);
(Added a % sign before the second occurrence of \w in both lines that start with $text)