Self Immolation causes exposure to be reflected back (and with higher effect)

I hope this is not intended, but when using "Self Immolation" skill tree node in combination with "Fire Exposure" support gem causes exposure to be reflected onto yourself with higher effect.

In PoE2, Exposure has less effect on monsters based on their rarity.

If you inflict Exposure onto a unique-rarity enemy, does it show as having a -12% effect?
If so, I'd imagine that the debuff on the enemy is the same magnitude, and what's shown on them is the actual effect after taking into account their rarity.