I'm magically not allowed to have an Energy Form type passive now, k thanks.
Was discovered with Hearth Rank 2.
Details:
Having Compassion active
before acquiring Hearth started this. Theoretically, when you slot an Energy Form type passive, it begins with the Energy Form Cancel debuff. This debuff is then refreshed by the Toggled Form (The Host Buff, not the bonus stacks the form grants.)
Right now, we only have one(?) power that causes Energy Form Cancel to happen under normal circumstances, but this is still a possibility during normal gameplay.
Update:
The issue only happens with Compassion, all other Toggled Forms seem to work perfectly fine with Energy Form passives.