Heimerdinger bug? (with level up on spellcast)

So I just played a game where I levelled my Heimerdinger by creating two copies of one of my turrets using Dawn and Dusk. However, I think because my Heimerdinger levelled up before triggering his effect (i.e. creating a turret in hand), he did not create a turret after the spell was resolved. Has anyone experienced anything similar to this?