There's only one way to get to the bottom of this - someone has to make a video including screen recording of the controller device (iPhone or iPad) of an Anafi AI with latest updates hovering at some reasonable distance, with Obstacle Avoidance activated, until it runs low enough on battery charge to trigger RTH.
This will prove what actually happens vs. what is supposed to happen according to the spec.
EDITED TO ADD:
In the original circumstances of the mishap described by COH-Engineering, the actual behavior of this improvement mentioned by Parrot might be relevant - "[HUD] New progress bar to disable Obstacle Avoidance when the drone is stuck".
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