And regarding the idea that strong directional light or specular reflection can cause odd behaviour in drones: this is not without precedent.
The Autel Nano+ was a bugger for this - as demonstrated in quite a few real-time Youtube videos from...
Read through the linked article... "...surface glint..."??? I actually wondered what the hell the writer meant.
Do you think whoever wrote it meant 'specular reflection'?... that well known effect that can be countered or lessened significantly...
Simple Google search: "DJI Mavic 3 pro release notes".
Each entry lists app compatibility in the last paragraph. If the latest firmware requires controller/app updates - it will tell you.
Simple solution?
Spend 40 euro's on either a NLD or D-H license. But before you do: carefully check the 'bird map' to make sure your current firmware is open to hacking.
The oldest version of DJI Assistant (if you can find a copy) can be...