Dragon Hunter Longsword MTX not becoming invisible with Weapon Effects

So I really couldn't resist buying the Dragon Hunter Longsword as it reminded me of a certain weapon from Dark Souls.. and I wanted to combine it with the Sunstone Weapon Effect.
Little did I know, that the sword becomes invisible once you put some Weapon Effects on it. (Out of 3 effects I've got, 2 make it invisible)

I don't think this is intended this way, right?
Please look into it and fix it, I was SO looking forward to this :(






And just now, after relogging, the weapon does show up, but as a pith-black version, which is still not right.. it looks like the game just puts up a black placeholder of the weapon skin?