I can confirm that Smart Quantize is not working here either.A friend of mine upgraded to DP11 and he has found that the Smart Quantize function no longer works. When he makes a selection of midi and runs Smart Quantize, it does absolutely nothing. Is anyone else seeing that behavior?
Tell your friend to submit a MOTU Techlink describing this problem. I just submitted one. The more reports they receive will confirm this as an issue and not some quirk on one individual's computer system.