byobu-screen doesn't show status bar at launch

view story

http://askubuntu.com – At launch, byobu-screen simply displays the normal GNU Screen status bar instead of the byobu status bar. It shows the proper byobu status bar only if I go into "Toggle status notifications" and hit apply (this then persists until the screen is terminated). byobu-tmux works fine. What's going on here? (HowTos)