I can set breakpoints easily and I can see that they are set. But they are not hit when I refresh the page. Instead, an exception I throw (occurring after the breakpoint) is caught.
I found an obscure icon near the top of the window to activate and deactivate the breakpoints! I enabled the breakpoints, but now the page is infinitely looping in some of the debugger’s own code and reporting “Paused on exception SyntaxError: ‘*,:x’ is not a valid selector.”
Is this a known problem? Has it a solution?
I was using the debugger for a Web Extension. Did that put it in a strange mode for regular debugging? How would I get out of this mode?