They do. Companies mess things up all the time. But only a fraction of bugs get discovered and then reported, so it appears that their quality is ok.

I have recently discovered several bugs in different products created by different companies. And none has been reported so far in my research despite the products' popularity. I am not surprised, since those bugs require specific combination of conditions to be triggered, which most people have never run into, like in this article.

And I don't even blame them -- the engineers probably could never think of such use cases and don't have those workflows themselves. You'd have to really go out of your way to use obscure workflows to discover them.

Although in this case Apple dropped the ball by locking user out and not providing any alternatives.