If the user closes the plot by clicking the X then continues running experiments without restarting the program, the focus will switch from the command line to the new plot and Ctrl+c won't work unless the user clicks on the cmd window to bring it into focus. This won't happen if the user never closes the plot manually. Perhaps it can be fixed by explicitly focusing on the cmd window before each experiment.
If the user closes the plot by clicking the X then continues running experiments without restarting the program, the focus will switch from the command line to the new plot and Ctrl+c won't work unless the user clicks on the cmd window to bring it into focus. This won't happen if the user never closes the plot manually. Perhaps it can be fixed by explicitly focusing on the cmd window before each experiment.