@Balform2020can you upload a screenshot showing part orientation and the preview?
Sometimes when the no supports option is ticked, it will put in supports on certain features parallel to the bed in my experience, but this may have changed overtime.
If you go into the supports editor for the part, you could try turning off everything in there, and that will completely disable all supports detected. If you did want the raft printed, make sure to leave it on in the support editor.
Sometimes if you’ve oriented a part say a cube with the vertex of it on the bed, then this won’t work for some reason even if it’s auto placed so it’s definitely above the bed.
This is an issue that’s been in the software for a very long time.