Yes, in the console, I made the horrible mistake of setting a DOM breakpoint on an element that wasn\'t getting the content injected into it that I expected it to.
Sometimes when you set breakpoints you also autoenable "pause on exceptions". This will give unwanted persistant breakpointy behaviour. Cycle through the "pause on exceptions" button (bottom left) in order to switch it off (note- it is not on/off but three possible states)