Sleight of Hand bug

I put passive advancement on sleight of hand, then encountered a monster.

Right away during battle I had a gem pre-slotted.

I'm thinking its a bug because Sleight of Hand had not even reached level 1 yet and I was benefitting from it.

[Glitchless]

You don't need a point in it to gain the benefit of an immediate gem in play when you have a staff equipped.