When you are in the infinite loop or recursive calls, basically the browser stops responding to anything (either on Chrome or FF). You cannot see logs, cannot get into debug
Found another way of debugging. In my case the error was caught and so no errors where logged to the console. Found the bug with the checkbox Pause on caught exceptions. You find the option in den dev tools unter the Sources tab. To show and enable the checkbox click on the last icon:
After enabling this, the debugger pauses on every caught exception.