Lee Sin W Bug
Lee Sin W (Safeguard) goes cooldown whenever he jumps on dying ward/minion/champion at the same time, the dash doesn't occur and you can't even use the Iron Will (second W) after this happens.
I'm playing with about 100-120ms, not sure if it's linked with lags or not, but I'm really surprised that it happened many times with me (at least 8 times) and Rito didn't mention it in the last patch (8.21).
[slayer-jinx-unamused]