Since the drone launched and hovered before losing control, it's safe to say that the props unfolded properly.
With no evidence to go with, making guesses is unlikely to find the cause of the incident.
I read a lot of the comments on the video...
And as I said, flying over water or "confused sensors" didn't cause the drone to end up in the water.
The recorded flight data would reveal what actually happened.
I know that people suggest using rice.
It's very inefficient, but the myth...
It's not rude at all, I was being brief.
Here I'll give you a longer version.
When you understand enough about ND filters, what they can do for you and whether what you are doing with the drone would benefit from using ND filters, then you'd be...
That won't have been the reason the drone crashed.
His recorded flight data might show what actually caused the incident.
Using rice is much less effective that rinsing with alcohol and letting the drone air dry.