Wordpress 3.9 and firefox/chrome

Hi folks,

Hopefully someone can help me. I've upgraded to WP 3.9 and I'm finding that I can't activate a widget to move it to the main sidebar using either firefox or chrome. Tried them both but I can't select a widget to move. It just selects the text.

I'm using Chrome Version 34.0.1847.13 and Firefox 28 if that helps to identify the problem.

I've tried searching for a solution but haven't been able to find it.

Thank you!