editor head is fixed to top edge of track canvas

With the changes brought to the marker - editor head - range feature in the editor window, I noticed that the editor head (blue line) is now stuck to the top edge of the track canvas, which means that if you have more tracks than you can fill in the editor window and you then scroll down to the bottom tracks, the editor head may disappear in the process. This behavior is not affecting the playhead which always remains visible however big the session is.