My Watch 7 recently and briefly acquired a setting to turn the Do Not Disturb setting off at Next Alarm. It suddenly disappeared as a very useful feature shortly thereafter. Now, whenever DND is turned on my watch, it shuts itself off. There are no routines or modes set on either the S24 phone or watch as I have never used those features previously. I turned sync off and on, on my phone. Seemed to correct the issue briefly but now the same behavior has returned.