Adding any emoji as a reaction remains under review.
I am marking this as partially done to let you know a new reactions bar with Like, Heart, Laugh, Surprised, Sad, and Angry has begun rolling out to all users.
Once your tenant is using UPS (unified presence service), you should no longer have issues where DND changes back to available.
If you are on UPS, and are experiencing this issue, it would be super helpful if you can capture logs by typing Ctrl + Shift + Alt + 1, and send the file from your downloads folder along with any details to firstname.lastname@example.org.
Thank you for your feedback. The team is looking into this feature and considering solutions. We will share an update as soon as one is available.
We’re updating our command library all the time, so keep checking the menu in the command box to see what’s new by typing / or @.