Black bars replace file names after full screen preview

I have discovered that if I preview a slideshow using the full screen option, the file browser will have black bars over the file names after the slideshow finishes playing. The only way to get the file names back seems to be to close and re-launch FotoMagico. I have attached a screenshot of what is happening (see the right hand side of the screen). I am using FotoMagico 4.4 on OS X version 10.8.5. I get FotoMagico from the Mac App Store.

Any way to prevent this problem from happening?

We can reproduce this issue here and our engineers are looking into this. Thanks for the report including steps to reproduce it. That helped a lot!
we hope we can ship a fix in the next update.