I’d like to share a practical workaround that has come in handy for more than one person recently: when the rear sensors get stuck, or flag a phantom obstacle for no reason, restarting the system seems to clear the problem straight away.
The steps to follow are these:
- go into the system settings
- scroll all the way down to the display configuration
- use the system restart option
From what people have reported, the other settings remain saved. It may not fix the root cause for good, but as a quick solution before tearing your hair out or jumping straight to assuming a serious fault, it seems well worth a try.