Missing top-menu in simple-scan (Document Page Help)

Sorry to ask a Fedora question on an Ubuntu page, but your forum pops up every time I try to search for my question.
I'm not quite sure if this is a Gnome- or a simple-scan-problem.

I installed the latest simple-scan-rpm on my updated Fedora-21-system, and set up my Epson-scanner without any problems. I tested printing both pages and photos. But, when I the next day try to change some settings, I discover that there is no top-menu anymore. The highest menu-line is the one that says "Scan", and has the icons to save and rotate and crop etc the scanned image.
I can't seem to figure out how to fix this. I even tried to delete the .cache/simple-scan-directory and reinnstall the program. dcconf-editor has no option under simple-scan to hide or show any menu-line.
The screenshots I find on the net clearly shows the line in question on top of the window.

Is there a keystroke in either simple-scan or gnome that can fix this problem? :-)