Electron Debugger Breakpoints Jumping


I am debugging an electron program I have written and I notice (randomly, I have not figured out the pattern), that the source area of the electron developer tools cannot set breakpoints. When I do attempt to set a breakpoint, the point jumps. Here is a gif:

Notice the line and file jump to a seemingly random location. Any idea why this is happening and what I can do about it?

  • Windows 7 64bit
  • Electron v1.6.11
  • Node v7.4.0
  • (And I have run npm update to ensure I am using the latest of modules)

PS. I have a copy of this question on SO, but not getting any answers or comments so I think the actual electron forums could be more appropriate.