Not just on that, it will happen after a parry followed by a light attack as well. I came nowhere near my dodge button and it happens. Very annoying, they broke nobushi pretty badly in many ways for release... not sure what is going on with that hero in particular but it is messed up in several ways.
1) guard gets stuck in a direction for almost a full second before you can reorient it
2) Swift recoil happening at weird times even though dodge was NOT TOUCHED
3) Parry timing not working right in many cases, it used to be if you parried late it would be a block, now if you parry late you get severely punished
4) recovery frames after getting hit, or having a hit blocked are MUCH longer
You can still play as Nobushi against some players, but you come up against anyone who knows how they work and has some skill, you are at a severe disadvantage due to changed game mechanics which make no sense.