When I send photos from Photos on my Mac to Facebook all the photos go to the same folder (os X photos). I would like to have separate albums. It used to automatically do that with Iphoto. It changed when I upgraded.
In Photos, when you click "share" and select Facebook... when the box pops up to add text, etc - in the upper right part of that window, there's a "Timeline" with arrows by it - Click an arrow to have a further pop-up to select a destination of Facebook.