Sorry if this is known already, as I don't really come to these sub forums often. Anyway, it happened to me during some casuals with a friend. He was using Wesker and threw me out of Beserker Slash. It had already crossed him up but the attack hadn't come out yet, so I'm assuming there's a brief period where Logan becomes vulnerable before his actual attack comes out. I don't have video proof unfortunately.
Best widowmaker in North Korea.
"He's gonna switch to wireless mid greed sever."