When I recently applied 3 level ten Glass Mole cards to my Cannoneer I noticed that there was clearly no significant damage increase to any of my cannon skills after activating an SP potion.
No SP pot:
After activating SP pot:
I tested it several ways on mobs and in pvp combat. My damage AND sub weapon damage did increase after activating an SP pot, as pictured in the screenshots. I equipped both a crossbow and a cannon while testing. I attempted to use just my cannon solo, with no main weapon equipped. This didn’t work and only resulted in lowering my damage. The damage multiplier should apply to both while both are equipped. I know this because I have tested a similar attack with the glass mole cards on Rogues with the Backstab skill, which is another sub weapon skill. The damage multiplier did activate when I used my archer skills labeled [Missile] such as Multi-Shot and Heavy Shot. The damage multiplier also kicked in with my [Physical] attacks from the Sapper class. Everything I have experienced and tested so far has lead me to believe that this is a bug. Cannon skills are physical skills, but for some reason are not registering as such.
Does anyone else have any experience with this? Any help or suggestions would be appreciated.