reversal

I have a waypoint mission saved in Litchi. Is there a way to reverse the order of the waypoints to fly the mission from the opposite direction?

I am new to DJI Quads but have others like Hubsan Professional, Blade Chroma, and a few others. My new P4 does something that concerns me and I'd like to know if it's common. Upon reversal from forward to reverse (or vice versa), or from left to right (or vice versa), at almost any speed and...