digikam editor menu bar disappears on second startup

[Julian Klein]

I use digikam 5.4.0 with Ubuntu 17.04. I open an image in digikam's image editor. Everything is fine. I close the editor. I open the editor again and its menu bar "File, Edit...." is gone. I have to restart digiKam to see the menu bar again. It doesn't matter if I open the same image the second time or a different image. If I leave the editor window open, go back to the main window to open a different image, everything ist fine. The problem only occurs after *closing* and re-opening the window.
In the editor the symbol bar "Close editor, Save, Save as..." is fine. In the main digikam window menu and symbol bar are fine. The problem also occurs with a new blank user profile.

[Georg Lipps (georg-lipps)]

I also have the problem with loosing the image editor menu bar when opening a second time. Problem is seen with 5.5. and appimage 5.6.

Workaround (inconvenient): Go to right border and select extra in order to access to tools.

Restarting digikam also helps ;)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.