I just spent a good few hours trying to find out why my code just stopped working and hangs.
I traced it down to 2 strings that were null at startup and not allocated any value until a few seconds after the start so when the display routine wrote this to a TextBox.Text in the window update handler, it crashed the system without any errors or warnings. Only way out was APP key and reset.
I’ll post this on the GITHUB for a fix where it should throw an exception so we can at least handle them.