Yes, the "exit on click" functionality was badly done and may not work reliably.
$ tar tf 4.x/x86/tcz/src/flnotify-0.9.1.tgz
flnotify/
flnotify/.gitignore
flnotify/build.sh
flnotify/flnotify-0.6.tgz
flnotify/flnotify.cxx
Oh that old one. Included by accident I believe. You can ignore the flnotify-0.6.tgz archive.