Strange white artifacts in UE5.5.1

This is the second time I’ve seen these things in UE5.5.1…
I’m not sure if it’s correct to call them “artifacts”.
What is certain is that I have never seen this in previous versions of the engine.
I think it’s completely random.
The last time I saw them was last week and I didn’t give it much importance.
But this time I decided to record it on video to show it to you.

Let the engine developers know that something is wrong with the rendering.

Best regards!!