Diligence mechanics

In descrition it says, while your creatures are above 90% health, they ignore their debuffs.
In fact they are immune to debuffs while above 90% health, which is overwhelmlingly powerful.
Guess they should still be afflicted but ignore debuff effects while they are above that 90%?

Incidentally; if they’re hit below 90% health, then afflicted with a debuff, then healed above 90%, they don’t ignore the debuff.