Chrome javascript debugger breakpoints are not working
Restarting the app worked for me.
In Dev Tools, on the Sources panel, there's a button that looks like a breakpoint marker with a line through it: That button disables all breakpoints. To re-enable them, click the button.
Here's what it looks like when they are currently enabled (clicking it disables them):
...and when they are currently disabled (clicking it enables them):
