Unexpected Banking Before Back Transition

PX4 Autopilot VTOL 🚁
1

Hello,

I am experiencing unexpected left turns before reaching the decision WP (the one before VTOL Land waypoint). The banking is always to the left.

Example Log-1
Example Log-2

Anybody has an idea what might cause this?

May altitude error cause it to loiter around the decision WP before continuing to VTOL Land WP?

2

Turns out it is due to altitude error. I made the approach more flat, and the problem was solved.