221 - Custom trigger firing on any event, not player caused

1. Create custom trigger.
2. Set Primary Condition to (For example) Outgoing Crit
3. Leave Secondary Condition blank for now.
4. Enable it and stand near test dummies with other players around, watch it repeatedly trigger whenever they crit.

At first I thought this was me configuring Parrot wrongly, but I can see no way to restrict the event to only my events.

Parrot Version 1.10.28