No way... really? I mean... it DID work in the switched stance, if they managed to make it work in the regular one and they already had it working on switch... whaaaat?!?!?! Can't be that hard to fix!
It's true lol I tried it against Scorpion and SZ hurtboxes.
For UB though, I can only get 1-bar-max 34% mid screen off either B12 or (aura start) b2 . Both cost a bar, but aren't too difficult to do. I'd only recommend the b2 OH option since the difference between meter vs. meterless is > 10%. We can get 33% meterless with b12 so, don't bother (I'll note that with jip and corner-assist after corner carry, I can boost the 1BM to 37%. Not terrible, still not worth the bar).
I can get 1BM 44% in the corner with (aura start) b2 and 42% with b12.