[pthreads] QThread self.terminate() makes app not responding

In 5.14.2 my app is not responding in Windows when I set variable isrun = False:

class AThread(QtCore.QThread):
    def run(self):
         while True:
             if widget.isrun:
                 print("thread ping")
             else:
                 self.terminate()
             time.sleep(1)

But without using variable isrun, just by mythread.terminate() - it's ok.

Maybe it's because "terminate" is inside "while True", but before update it has been working.

In 5.14.1 and 5.13.2 it's ok.
Python 3.8.2, PySide2-5.14.2.1-5.14.2-cp35.cp36.cp37.cp38-none-win32.whl (from pip)
Example related.