Hi folks -

My application plots real-time sensor data and also allows the user to send very short commands to HW over a serial port. The strange behavior is that through some combination of interaction (I haven't been able to consistently reproduce it), the application window stops repainting itself. When it gets into this "mode", if I move the whole application window it refreshes (redraws? repaints?) everything and then stops again when the window stops moving. For example:

- If I click on a LineEdit nothing happens - but if I then move the window slightly then the cursor appears at the end of the text. It doesn't blink like it should unless I keep moving the window to keep it refreshing.

- The plot displaying the incoming data stops updating - but when I move the window it refreshes and shows enough acquired data to indicate that everything continues to run correctly in the background.

Does anyone have any suggestions as to what might have happened or what I can look for to explain this behavior?

Thanks much,

Joe.