Question about Arcane Arachne "Arcane Batman"

[---Greed---]

So i have 10 Arcane Arachne on my syandana with this kind of effect ( 60% Chance while doing Wall Latch to get 100% Increase Damage for the Next Hit only )

My Question : Is it intended that some weapon wont get the arcane effect ( Kulstar / Tonkor / Torid / Ogris / Angstrum / Dread / Lanka / Rakta Cernos / Mutalist Cernos / Paris Prime / Despair / Spira Prime / Kunai / Penta / and many more weapons that has "Flight Projectile" )

I test most of the weapon with Flight Projectile it still wont work but weapon with no flight projectile still work like Vectis Prime or Sancti Tigris

What do you guys think about this?

Edited May 17, 2016 by ---Greed---
miss a few word

[OzoneSlayer]

Probably a bug. I guess u can't use it with your tonkor and do 300k×2