Update: Rift 1.7 Hotfix 13

GENERAL

 * Civil Unrest: Players will no longer be blocked from completing this Zone Event by a lack of Invasions. Invasions for both factions will continue to spawn even when no Holds or Banners are active for their side.
 * Stop the Master Saboteurs: Fixed an edge case where the Master Saboteur might not respawn.
 * Fixed a case of failed zone events remaining tracked on-screen until you logged out or teleported; these should now be cleared properly after failing a zone event.

Source

 * http://forums.riftgame.com/official-rift-news/patch-notes/308092-rift-1-7-hotfix-13-8-00am-pdt-3-27-12-na-2-00am-gmt-28-3-12-eu.html