In our 2019 Isata 3 when parked and slide is out when wind blows we hear a humming or vibration noise.
The slide is fully and properly extended with no breaches in the seals
Any body experience same?
The noise does appear to emanate from the slide out area
In really heavy wind it can get very loud. I have tried numerous things like a strap tied over the slide topper length ways pulled tight. Didn't help much. I also did the ball at each end trick and that seemed to help the most so I still carry them with me. About 8" diameter bought at dollar store and can be inflated to size needed.
It really sounds (pun optional ) like an orientation issue. If you could change your parking angle related to the wind some you would reduce or end the wind noise. Good luck and lets us know if this helps.