You are encouraged to use the Help->Report an Issue  menu in Dragonfly to report bugs.

Please provide your email to get a follow-up from us, and describe as much as you can (mainly for how to reproduce the issue). 

As long as we can reproduce your reported issue on our computers, we will fix it in the next release.

We also encourage you to use the Tools->Application Recorder (or Utilities->Screen Recorder in more recent versions) tool to record a video showing the steps to reproduce the issue. Attach that video in the Report an Issue dialog: