100% agree...from watching combat logs post U59 my character is taking more crits. I noticed it the first hour of U59, like many of you.
My guess is they turned up mobs seeker. And I think the motivation was/is clear, make r10s harder. Likely there were several minor changes.
Honestly, i'm fine with the changes, but given that it was done during a feat refactoring for players. it is unclear if these changes were intentional. It's is possible that mob feats were also refactored or there was some halo affect there, only we can't really test changes in mob accuracy/crit_confirmation.
again, while i'm fine with the dungeon masters shaking things up a bit, i'd have preferred transparency and I'd also have preferred they not do this type of activity while doing a major overhaul (u59) b/c it makes the players feel like they are using a piece of software instead of a game. if you're gonna turn up the difficulty in the background, then please release some slightly cryptic release note indicating as much, so we don't guess at it being a bug. And if you've been caught tipping the scale, then come clean and own it OR if it's an unsolved/unknown, let us know you're investigating.