At AncestryDNA, about two months ago, my sister set me as a Collaborator on her DNA test which is linked to my tree, and I just checked to see that I still have that Collaborator status, and as far as I know that status has been unchanged in between.
My recollection is that up until a week or two ago, when I used her DNA test to View All DNA Matches and chose one to View Match, and then the Shared Matches of that match, what I was shown were the shared matches for my sister to that match.
However, I think this behaviour has changed so that what I am shown is now the shared matches for me to that match of my sister.
This seems to be resulting in many more reports from the above workflow of:
You have no shared matches with [match_name]
and thus far less useful information.
If the change that I think I have noticed is the correct behaviour, is there any way from my account that I can view the shared matches for my sister to one of her matches?