When ancestry switched over to the current private setting many trees contained settings that were shown incorrectly. I have screenshots from that time period and from later dates of examples. I continue to see similiar situations in trees. There are threads on this. The owner may not be aware of the situation so you may want to try contacting them. In some cases the tree owners are no longer active and they may not ever fix the problem, although that shouldn't be the case if they have recently done the DNA testing. I saw this happen in my own tree and made screenshots of it. It particularly happens when a source is used to add someone to a tree and that source has a broad range of dates. Previous threads on this also mentioned that the deceased button did not always work on the first attempt and had to be double checked.