An interesting one: an old-style Bounty event showed up in a player's logs:
Given the information here I have to assume that it's a bug showing up at all, but it does suggest that there's a codepath out there where the Bounty event wasn't upgraded to the new-style format.
Code:
{ "timestamp":"2016-10-24T18:54:32Z", "event":"Bounty", "Target":"Skimmer", "Reward":0, "VictimFaction":"$faction_none;", "VictimFaction_Localised":"None" }
Given the information here I have to assume that it's a bug showing up at all, but it does suggest that there's a codepath out there where the Bounty event wasn't upgraded to the new-style format.