In those cases, the effect isn't applied until the animation ends. Which is the case for most actions. Varying animation length makes it hard to determine if the kind of action batch-processing delay WoW says they're moving away from exists in FFXIV at all, let alone what it might be. Doesn't sound from that blue post like this is necessarily some kind of industry standard that Blizzard is ditching (unlike the movement/position polling, which is), it's just how they were doing things before.