I'll switch things up to see. I use an Elite Scimi and Elite Cavalry with speed ratings of 99 and 100.
You thinking maybe with slower weapons and shields it won't happen (or so much)?
quite the opposite i suspected, in a combination of high agi, medium to high wpf, fast shield fast 1h.
It seemed to me, that the animation somehow would be broken, getting stuck and the release sequence wouldn't be resolved correctly.
The only thing i saw what then worked still quite well is to hold the attack open even longer and then release it very controlled, which but often leads to death as
when you fight against 2 or more and one of those outreaches you, he may just spam you to death in that still short time period, that but also may have to do with the turn nerf.
Testing this out could be a quite time consuming thing, you would need several alts, different agility and wpf settings, different weapons and shields to be used.
Keeping track if you are turning when releasing and how long you would hold the attack before release.