Brutus' Lead Sprinkler not triggering skill when used by "Manifest Weapon", w/ "Sturdy Ally" node

per above, Brutus' Lead Sprinkler item description reads "Hits with THIS Weapon have 5% chance to Trigger Molten Shower per 25 Strength. The tooltip specifically says THIS WEAPON which should apply the Manifest Weapon.

With "Sturdy Ally" Passive Node allocated which gives Companions your Strength, it SHOULD proc when Smith's Manifest Weapon hits, since at that point it technically has YOUR Strength.

Unfortunately, it does not proc.