title: PyQT5 GUI not working under MacOS Monterey
body: <p>I have recently switched to MacBook with M1 processor and macOS Monterey, and my application in PyQT5 stopped displaying images. All other features seems to work.</p>
  <p>I had the same problem on previous Mac after upgrading to Big Sur. In that case adding
  <code>os.environ['QT_MAC_WANTS_LAYER'] = '1'</code> solved the problem, but it didn't now.</p>