Click the colonist, or whichever DOFF you want to dismiss, and hit the dismiss button in the bottom right of the window, if you aren't getting a response to right clicking.
A link to that would be great. I received an email response today for my ticket about it and was basically told it was working as intended and I did things wrong by not clicking the respec button. Except of course, in the ticket, included in that same email, I told them I did click the respec button and that it didn't…