Hi,
I just ran into a rather serious Geany bug that can cause file loss.
Incidentally I had the hard disk partition full (on Linux) and Geany was happily reporting that file saving is successful. I had about 20 open files, worth about 2 hours of work. When I was done I saved all the files and closed Geany. Seconds later, I realized that all my files have size of zero bytes. Not only that I lost the recent changes, but complete files. This happen just prior to the commit to Git repository I planned. Obviously, I have nothing to commit. :(