I use Lollipop. Before this update  if I click the go back button after read a link  I started in the same part of my time line that I was reading before left the app after click the link. After the update  when I go back to the app  first shows a white screen whit "" + - "" buttons. So  I have to push again go back button to go to the app  but appears all my time line updated instead show the time line part that I was reading
March 04 2017