If you want to file an issue/bug with the development team, it’s often hard to put in words what exactly is going on, especially if English is not your mother tongue. If a picture if worth a thousand words, perhaps a video is worth a million of them, so why not demonstrate exactly what is going on with a quick, easy and free screencast?
I’ve just done that to provide more feedback to an issue. I used Screencast-o-Matic:
No need to launch any programs, prepare video files, upload them or self-host. Everything is done from the browser, instantly and almost entirely automatically.
Can also be used to demonstrate functionality of your just-submitted Module.
The easier it is to understand and replicate your bug, the faster it will be fixed!