One thing I'd test is block breaking the Klone at that distance. I remember doing Klone as close as possible after F12 and then doing D3 pokes while they auto blocked. It would block break the Klone randomly because of the 3 block animations. Can't remember which ones broke it but there are 3, left arm, right arm, both arms. So Alien gets frozen when ducking after block 12xxKlone. See if he block breaks Klone if he blocks as he ducks and other similar scenarios.
Also these random inconsistent Klone cancels are due to the random block animations used. Look closely in slow mo which arms Alien uses to block and you'll see. Anytime Alien used both arms whether on the 1st hit or 2nd the Klone didn't come out. But whenever it used only 1 arm for both hits it was fine. Sadly there is nothing we can do about this.
