Type absorbing abilities and status moves

[pyrromanis 70]

Some type absorbing abilities like Storm Drain, Water Absorb, Sap Sipper and Motor Drive fail to absorb some status moves and give the boost/heal.
More specifically I have tested:
Soak vs Storm Drain and Water absorb. Both times the move was used normally and got the text "X pokemon became water type"
Thunder Wave vs Motor Drive. Motor Drive activated normally and the pokemon got the speed boost while T Wave failed
Eerie Impulse vs Motor Drive. Motor Drive didn't activate and didn't get the boost while the Eerie Impulse debuffs were applied
Leech Seed vs Sap Sipper (non Grass user). The move failed and the Sap Sipper pokemon got the attack boost
Leech Seed vs Sap Sipper (Grass user). The move failed but the Sap Sipper pokemon didn't get the attack boost (move failed cause Leech Seed fails against grass types)
Forest's Curse vs Sap Sipper (non Grass user). The move wasn't absorbed and transformed the Sap Sipper pokemon into grass type. No attack boost either
Will O Wisp vs Flash Fire. Move failed and Flash Fire was activated normally. I haven't tried though if the pokemon is non-fire with Flash Fire (let's say from Trace or something)

I haven't tested other type absorbing abilities or other status moves but probably most, if not all of them, don't protect from status moves (or at least most status moves)