Got distracted. I didn’t forget, I just didn’t do it yet 
Looking at decapre’s file (which is a pain since it’s just a text file and I can’t actually open it in ono ~_~) it looks like her EX Razors Edge Slicer does no stun on hit period. Not just counterhit. Can you verify this?
I think it just adds stun on the 2nd hit? In that case it would make sense that it doesn’t add any on CH.
Can I just say: I really hate how this game handles hitstun. I noticed Hakan’s f.LK was +3f on CH, but I just assumed it was because it was a command move.
EX RES does not have glitched stun on counterhit
the first hit does 0 stun, the second hit does 250. since it’s technically a 2 hit move the stun bonus is only applied to the first hit, and 1.25x0 is still 0.
the glitch where you can randomly get regular slide is the issue.
Oh yeah, I had that happen once. Did EX scamble, still got non-animation RES.
Also,have we mention the C.Viper bug where everythings fucks up when you do a lot of ultra 1 against oni?
damn
im going to prepare cody like essays for this matter just because im salty
Some more insight on the decapre RES glitch:
If you do LK+MK EX Scramble point blank, then press K on the last possible frame (might be more than 1 frame though, not sure), you’ll get non-EX RES. I have not been able to do it from longer ranges. Seems to work on every character, standing or crouching. To avoid it, make sure you press kick before her after-image shows up. This issue also exists if you do it during a knockdown or something where the RES will whiff.
It has to do with the flow system. I looked into it and it’s calling for the wrong script on specific frames of the scramble when done under certain circumstances.
Also I noticed her backdash is 100% identical to Cammy’s and thus subject to the same issues.
Haven’t played ultra yet but a few old things they probably didn’t fix
Chun has a cl.lp cancel like e.ryu.
sagat has +1 off a fa low tiger compared with a high tiger (might be intentional)
Akuma fadc hurricane vs crouching gives +1 fa, Ken too I think
Balrog juggles higher then other characters
some times roses u2 lasts half as long. And can start in a different position.
Sim can empty cancel up flame ( may be intentional)
Gief can empty cancel far lk ( may be intentional)
Guile can cancel his b+lk off a chained light
last hit of dans super launches default amount on ch
Empty cancel?
Cancel on whiff
The dudley f+mk is normal… happens since Super, you just have to adjust combos. Not a bug, also same thing with lp mgb, its been in the game since forever. Cross counter behavior is also normal fromw aht I remember, has been in since his inclusion in super.
I noticed when playing today that KOing someone with Vanilla Seth’s U1 can cause the Ultra KO screen to happen during the part where they’re inside the tanden engine. That never happened in Vanilla, right? Might happen with other versions of Seth as well.
Sakura’s EX DP still tends to drop at certain ranges in spite of the hitbox buff.
Try other characters, I remember hearing that the unblockable ultra bug from vanilla doesn’t work in USF4 edition select so there are differences between ES and Vanilla. That said I was only compiling bugs that exist with the USF4 versions of characters because that is the only version that has ANY chance of changing.
There are definitely differences. Unblockables between vanilla characters that don’t work in SF4 work in USF4.
1st one: Chun doesn’t even HAVE a chained version of her close LP. That is why she can cancel it. It just chains into itself, there is no R5LP whatsoever.
2nd one: Nice spot, yeah the FADC timing is the same for HTS as it is for LTS even though HTS comes out 1F sooner.
3rd one: It’s an issue with any attack that forces standing on hit.
4th one: Balrog isn’t the only one, also happens with Deejay, Decapre, Dan, and a number of others. I don’t think there is much they can do about that, I’ll list it though.
5th one: Yeah I remember you mentioning that before with Rose, any idea the cause?
6th one: It also applies to his regular yoga flame, not just yoga blast. My guess is at one point they were going to make his flame/blast into VFX scripts but then didn’t and left it as is. Since it’s on both I suspect it’s intentional. What IS interesting though is that Dhalsim can’t cancel those attacks for the entire duration of the active frames. The last 8-10F (before speed settings are applied) don’t allow it.
7th: Interesting find
8th: Interesting find, he can’t do it from a normal light but if he chains into a light he can’t (E.G. sLP - B+LK doesn’t work, but sLP - sLP - BLK does)
blanka juggles lower 
I never had to deal with ex lunge u1 in AE from yun.
Just because a bug has existed since super doesn’t make it not a bug or piece of miss set data. Cody’s B+MP didn’t have a counterhit flag on it from Super - AE - AE2012 and only got it added in USF4 because I brought it (and many other bugs) to the attention of Capcom. Unblockables have existed since Super as well. Sagat only getting 1 hit in the corner with his Ultra 1 first appeared in Vanilla. A bug is a bug no matter how long it has been in the game. The only real question is: does this bug add to the depth of the game more than it detracts from it? Strafe jumping in Quake was a bug that made the game better and since has been added to every version of the game intentionally.
seems random, the durriation and starting position is based on how much ultra you have, but sometimes with full ultra, it acts like it’s half full.
Should be easy to test if it’s a PC only thing.
onis air demon doesn’t juggle properly on ko. ( uses a different script without the same jp )