Had two great flights from the same home point just before.
On the third flight, I got into trouble flying over a low parking garage.
Spark drifted from yaw errors and I repeatedly pressed RTH which it finally did after getting GPS back.
While doing the RTH precision landing, at 2m 48.4s, the AC just drifted quickly to the side for no reason into trees while with 19 satellites.
Luckily, I just lost 1 prop and the AC fell to the ground without damage.
I can probably understand the Yaw error from interference form the garage but why the sudden pan to the side while landing with 19 satellites?