I'm not sure about the RPi4, but for other raspberry pi's you need to use the new RFM69 driver, #define MY_RFM69_NEW_DRIVER. You must compile both your nodes and gateway with the new driver.

@user2684 If you are stil looking for comments on whether the expected behavior is CHANGE or RISING, its CHANGE for my purposes. My motion sensor is set to reset after 5 minutes or so without motion, and I want that reported as well as the initial motion. So I needed to change the mode.