American English has ready words for naming a problem.
the elephant in the room — “an obvious major problem or issue that people avoid discussing or acknowledging.” The phrase is recorded from 1985. A common way to open a hard topic in a meeting is: “Let’s address the elephant in the room.”
to red-flag — “to identify or draw attention to (a problem or issue to be dealt with).”
to flag — to point out a problem so that someone deals with it.
to call it out — to name a problem or a mistake openly.
to raise a concern — to bring up a problem formally, in a meeting or in writing.