As stated in the title, I don't see any cooldown decrease when activating the Twisted Arbalest's mod when spellweaver lvl 10 is equipped. Tried other uniques with innate mods and it worked just fine, so seems to be specific to the Arbalest.
#spellweaver's 2nd ability doesn't activate with Twisted Arbalest
gilded oyster
Demonstrating Sagittarius vs Arvalest for comparison's sake https://clips.twitch.tv/ObliqueAnnoyingKuduPartyTime-5f9-CVimyk4lErgJ
onyx kayak
added to list