Chrome 80: Pause Script Execution (F8) Does Not Work When DevTools Is Not Focused


Answer :

Until it is fixed, you can use the following in your app:

document.addEventListener('keydown', function (e) {     if (e.keyCode == 119) { // F8         debugger;     } }, {     capture: true });

It's a bug in Chrome, I found the bugreport here:

https://bugs.chromium.org/p/chromium/issues/detail?id=1049910&q=f8&can=2


WORKAROUND

You can use option Break on -> subtree modifications

It helps me to stop script execution instead of using f8 functionality.

Steps: 1. Turn on 'Break on' for element you need to debug 2. Make some changes (hover or open drop down list as in my situation) 3. Browser will pause script execution

I turn on this for debugged element


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