When you click “from here” on a first marker, the coordinates show up in point (A). When you click on a second marker, the directions area of the first marker disappears. When you click “to here” on a second marker, the coordinates show up in point (B).
This the expected behavior and there is nothing to fix as far as I am concerned. If you want to show the distance/directions between two markers – at the moment it is not possible.
I hope I was clear in my explanation
Thank you