I signed up on the forums just so I could report this as a bug or add it as a suggestion, then I saw this topic.
This is a big problem, and has caused me to fail so many matches for me lately. I don't know if they changed it in an update or if I somehow changed my playstyle, but I keep finding myself doing a grab when I am trying to dash after a block.
Last prize fight match went down like this:
I killed RE big band and DL filia.
SG valentine had 5% health left with 10 seconds left on the clock, and I was waiting for her to finish a combo so I could stop blocking and attack. She does an uppercut with 3-4 seconds left (so it's safe for me to counter attack), and I try to dash to start a combo but my character grabs instead.
Valentine survives with 1% HP and immediately uses forbidden procedure on big band when she gets up and resurrects him, then I finish her with a dash and lose because now big band is alive and time ran out.