For example. A units spends 4 AP and waits. That unit then gets stunned. The turn they were about to receive is skipped and 5 AP is deducted from the AP pool of their next turn.
9 – 4 = 5, on the next turn the char loses 4. As long as the stun takes away 1 turn worth of ap is fine. But if for some reason the char would end up losing half of this turn and the whole next (starting with 3 or less ap) that would be a problem.
