Screenshots in Firefox not working

[mctypon]

Describe the bug
Error with screenshot node in firefox.
Log error : Type error for parameter options (Error processing url: Error: Access denied for URL data:image/...

To Reproduce
Steps to reproduce the behavior:

1. Go to create new workflow
2. Add node active tab and take screenshot page
3. See Error

Expected behavior
A screenshot should normally be taken and saved to computer

Desktop (please complete the following information):

• OS: Windows
• Browser: Firefox
• Extension Version: lastest to this date

Additional context
I suspect that the process of taking screenshots is different in firefox : refer to this message that may help http://forums.mozillazine.org/viewtopic.php?p=14960316