Soul Strike Vengeful Spirit inconsistent behaviour (melee/ranged)

Description

There is a lot of confusion over whether Soul Strike Vengeful Spirit is melee or ranged. Is being melee/ranged a property of the hero or of the attack?
It's difficult to report bugs without knowing the desired behaviour, so I'm going to use this to document the current behaviour and hopefully a dev can glance over it and tell us whether that is how it's supposed to be.

Item/Mechanic	Ranged/Melee	Notes
Battle fury	Meele	Cleaves of the target like pa dagger
Basher	Melee
Abyssal	Melee	fixed in 7.36a
Broom handle	Melee	bug #18844
Dragon lance	Ranged	bug #18844
Hurricane pike	Ranged	bug #18844
Penta-edged Sword	Ranged	rotated out at the moment
Ballista	Ranged	rotated out at the moment
Manta	Melee
Innate melee damage block	Ranged
Vanguard	Ranged
Skadi	Melee
Echo sabre	Melee
Harpoon	Melee
Orb of venom	Melee
Orb of corrosion	Melee
Enchanted Quiver	Ranged
Arc warden's tempest double's magnetic field	Ranged
Precision Aura	Ranged
Quelling Blade	Melee
Uphill miss	Melee

Right now it looks like Soul Strike Vengeful Sprit gains the benefits of both being ranged and melee for her attacks. However when it comes to effects that care whether she is melee or ranged the behaviour is inconsistent. Skadi slows like she is melee, but vanguard won't give her the damage block for being melee. I don't know why the melee attack range from penta-edged sword behaves different to the one from broom handle. Something to be fixed before it rotates back in.

Example Match ID (and possibly Timestamp)

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Screenshots

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ValveSoftware / Dota2-Gameplay