Please ensure you have the Console panel option Show JavaScript Warnings checked.
Hello,
The Console panel displays everything ("Tous")
I changed my code and got rid of the syntax error, but I still have the getPreventDefault warning, even after updating Firebug.
I can't update Firefox (business network).
It's just a warning, and in a jquery library, so it's not a real problem, but I'm curious about the differences between Firebug and the element inspector.