For Awareness: Up obstacle avoidance does not work in Waypoint mode

Hope Litchi can put this in the guide or improve on this.

Yesterday I tried familiarising myself with waypoint mode.
The air 2s drone took off from ground and hover for about 2secs, the just ascended upwards and crashed onto the ceiling above.
As it’s a flat ceiling, the air2s behaves like a dragonfly keeps hitting the ceiling.
Until I recovered from shock and toggle the normal to C mode on the controller and gain control to descend the drone.