to be a problem; to cause an issueUsed to say that something is or becomes an issue. The form changes depending on the sentence, such as 문제가 돼요 or 문제가 될 거예요.
KO: ‘문제가 되다’는 상황에 따라 걱정거리가 생긴다는 뜻이에요.
EN: Depending on the situation, “문제가 되다” means that something becomes a problem.