Every time I download anything and click on "open folder" in Firefox something else happens, instead of the required action a media player is open.
I just uploaded this video so you can see for yourselves what I'm talking about.
How can I troubleshoot this? What can be causing this? By the way, it's happening now with FF 57 but it also did with the previous version which I guess was 56.
I have no problems in Opera for this action. I'm on Linux Lite 3.6 x64.
Youtube Video about the phenomenon. Clicking on the folder icon, a video play opens and not the folder.