Hi appointment-insect,
Thanks for the demo.
Here is a scene file that allows us to see a fresh start; I have placed a Mesh Object to it for precise comparison. When this works, we can take a look deeper. Use a new scene for new tests.
I would just start over; I have tested this scene with 2023.1 and 2023.2, just in case. The pale-greenish shape should be the same. The Triangle is just another check.
Screen Shot 2023-09-09 at 10.28.58 PM.jpg
Let me know if that works for you.
All the best
P.S.: I hope an affordable device for your DJI drone will be soon available. (I have the same problem, but my pilot license needs renewal, so I have no time pressure currently.)