Is AI misalignment actually a real problem or...

Genuinely curious where people stand on this. Not talking about sci-fi scenarios. Talking about real production systems today. Have you seen an AI system ignore its own instructions? Misread what the user was actually asking for? Take an action that wasn't supposed to? Give a completely different answer to the same question just because you worded it differently? And when something went wrong, was there any trace of why it happened? No right or wrong here. Just trying to understand whether this