[GAMEPLAY] Vladimir: Tides of Blood buff does not update when the ability is leveled.

Not sure if this is intentional or not, but seems like it might have been introduced with Vladimir's Tides of Blood now affecting Spell Vamp items.

Steps:

1. Start a new game as Vladimir, equipping yourself with Spell Vamp items (Hextech Revolver/Will of the Ancients).
2. Level your champion to level 9.
3. Put one ability point into Tides of Blood and cast it 4 times to achieve maximum stacks of the "Tides of Blood: Empowered" buff.
4. Put four ability points into Tides of Blood and cast it to refresh the buff.
5. ---> "Tides of Blood: Empowered" is not providing the 8% per stack bonus to Spell Vamp.

Info: Letting the buff fall off and getting back to 4 stacks properly affects Spell Vamp.