Pyinstaller and PyQt5 macOS Mojave compatibility issues

Question

My application, created with Pyinstaller, worked fine until I upgraded from High Sierra to Mojave. In order to demonstrate the issue I create the simple application. Main windo

Answer 1

I found an answer to my question. In order to solve this rendering issue you need to add the following line for a ui element, which needs to be updated. In my case it is required only if I need to run this application on macOS Mojave.

<element>.repaint()

For example:

def click(self):             
        self.pushButton.setEnabled(False)
        self.pushButton.setText("Button is clicked...")
        self.pushButton.repaint()