Something has gone wrong with the "sophisticated pillager" skill, which should give a 30% chance to receive an adventure bonus quest
For both of these mail below, I received no quests, even though the mail says the skill has activated
Notes concerning the bug:
Explorer emails do not always mention "sophisticated pillager", which implies that the skill is only mentioned in an email when it has been activated.
I have 6 bonus quests currently active, but not for any of these adventures. I know you can only have one quest for each different adventure. Perhaps there's a hard limit of how many quests you can have in total, or perhaps there aren't any bonus quests for these particular adventures (which I consider to be "undocumented key feature" type bugs).
On the second image, I only expected to receive one bonus quest, not two. Receiving none was final confirmation for me that something was wrong. Perhaps something has gone wrong with the interaction between the "sophisticated pillager" and "trouble-seeker" skills.
Still haven't bothered reporting this to support since, really, they're not going to do anything about it. I'll wait to see how many more lost quests I get...
----Updates will follow below to keep track of problem----
Update: 8 April 2014 - found traitors and lost skull at same time, skill "fired", but no new quest