I have seen this suggestion several times over the last few years but even after what appears to be a well accepted consideration it does not seem to be available yet. Please consider making the effort to add this feature as I believe it would make the debugging experience a real game changer as debugging threaded code is nearly impossible as it is now.
That being a way to debug a single thread! Ideally a toggle button that will set break points to the current thread - perhaps with an option to freeze the other threads.
Customer support service by UserEcho