After upgrade to 1.27.0 multitheaded debugging brakes on "paused on pause"

Environment data

• VS Code version: 1.27.0
• Extension version: 2018.8.0
• OS and version: Ubuntu 14.04.5 LTS (Ubuntu 16.04.5 LTS)
• Python version: 2.7.6 (2.7.12)
• Type of virtual environment used: N/A
• Relevant/affected Python packages and their versions: N/A

Actual behavior

When debugging multi-threaded app, the placing breakpoint in some thread cause break there, but very soon it breaks in different threads, jumps to the place and expand thread’s stack which has “Paused on pause” status.

Expected behavior

After stopping at breakpoint stay there - not to switch to others threads nor expand stack on “paused on pause”.

Steps to reproduce:

Run under debugger next app with break at print 'th1'. Watch break position is jumping to “paused on pause” threads.

import threading
import time

class RunThread(threading.Thread):
    kind = 'Thread'
    def __init__(self, name, fn, args = ()):
        threading.Thread.__init__(self)
        self.name = name
        self.fn   = fn
        self.args = args
        self.start()
    def run(self):
        self.fn(*(self.args))

def th1():
    while True:
        print 'th1'
        time.sleep(5)

def th2():
    while True:
        print 'th2'
        time.sleep(10)

def th3():
    while True:
        print 'th3'
        time.sleep(15)

def main():
    threads = []
    threads.append(RunThread("aaa", th1))
    threads.append(RunThread("bbb", th2))
    threads.append(RunThread("ccc", th3))

    for t in threads:
        t.join()

if __name__ == '__main__':
    main()

[egorse]

As @primes2h said - previous version https://marketplace.visualstudio.com/_apis/public/gallery/publishers/ms-python/vsextensions/python/2018.7.1/vspackage works just fine.

Just for those who looks for fast solution curl -O -J -L https://marketplace.visualstudio.com/_apis/public/gallery/publishers/ms-python/vsextensions/python/2018.7.1/vspackage && code --install-extension ms-python.python-2018.7.1.vsix

[MandarJKulkarni]

After upgrading ptvsd to 4.1.2, unable to debug anything, neither flask nor ‘current file’ debugging is working.

Getting error “C:\Python27\python.exe: No module named ptvsd.main; ‘ptvsd’ is a package and cannot be directly executed”