How exactly does the gold sharing for ward kills work?
The patchnote says:
The killer of the ward gains 50% of the ward's base gold value. Nearby allied champions with Oracle's Elixir, or allied champions that placed Vision Wards nearby, split 50% of the ward's base gold value.
That is to say that if multiple players reveal the same ward, they share the 15 gold reward.
Before, 30 gold was given to the killer of the ward. Now, 15 gold is given to the killer and 15 to the first person who reveals it.