We made a change on March 30th to ensure both the "view all tree matches" link displayed on your Home page and the Matches dropdown (in the new header)* now redirect to the same page. This was not the case beforehand. Therefore, you may have noticed that the Merge counts were different on each view.
So, the default changed to "Managed by Me" from "My Relatives". However, please keep in mind that if you had recently changed the view- then we include a cookie for your last view. Therefore, your view may be "Followed By Me", "Descendants of x", etc.
* The old header would be the 'More' dropdown > Merge Center