Killing units with damage that is 1 point lower than its hp?
So I was playing League today I was on Ezreal bot lane and I was hitting a caster minion and the minion had 124 hp and I hit it for 123 (shown on screen) and I killed it. I also remembered that the same thing happened to Pobelter during one of his streams (first clip in the youtube video embedded) where he had 44hp on Jax and a 43 damage W from Lucian killed him.
Anybody else encountered this? Is this intended?
-Lifebloom
25 true damage