[cadamsau]

Seeing something once doesn’t make it a real phenomenon.

Besides, if that is common, Waymo will have data on it and if it’s common enough, they’ll fix it.

I’ve sat in Waymos on 2 occasions, each on a separate ride, in which the car avoided collisions that would have happened due to bad human drivers. Your fear is worth examining closely as it’ll hold you back from enjoying this amazing technology.

[nmstoker]

I think you may mean something other than phenomenon ("an observable fact or event"). Seeing anything more than zero times makes it a phenomenon by definition.