I run Google Chrome Version 43.0.2357.130 m and WebFig v6.29.1
When I go to Firewall and click a rule to edit it, I get into drag-and-drop mode instead of edit firewall rule. Please see attachment.
I have no problem in Mozilla Firefox or Internet Explorer.
Is this a known bug?
Maybe its not the case, but do you have some popups that are blocked when you do this?
No, popup is not blocked, but the edit-page is redirected in the same window, so popup-blocker should not be a problem.
Turn it off, just in case, i had similar problem.