I am wondering if this a word or phrase for a problem that is encountered the first time? So, a problem or failure in a system that is encountered for the first time. I thought about asking this question on computer or programming or engineering stack exchange, because I really feel like those fields would have a word for this. Is there already a word for this?
So, it's kind of the opposite of this question, because they are looking for the thing that solves a problem for the first time, and I am looking for what a first, unique problem or failure or glitch is called. This is the only question I can find that is similar to this question.
As an example, I would use the Tacoma Narrows Bridge. I watched something on Modern Marvels about it, how the winds in the Narrows was too much and caused it to collapse. And the way Modern Marvels made it out, was that it was unknown to engineers that wind would have such an effect on such a long span of bridge, because it was the first time encountering the combination of winds and length. Now, whether that's true or not is irrelevant. If it's wrong, feel free to comment, but for the sake of the question, just pretend it's true. So, is there a term for a problem that is encountered for the first time?