there is still no reliable way to tell if the simulator is in the paused state. We have to develop silly workarounds because all events are broken.
1. None of the system events on the list here is sent by the newly added "Active Pause" or "Esc" key MSFS menu.
2. While pressing "Esc" key during flight sends KEY_PAUSE_TOGGLE event, it happens only on menu entry. Exiting the menu and resuming the flight does not send any following event.