Does work that finishes at midnight after 'Isha prayer fall under the prohibition mentioned in "no staying up late after 'Isha"?

There are narrations that prohibit conversing after the 'Isha prayer, among them the Prophet's (peace be upon him) dislike of sleeping before 'Isha and conversing after it. However, it seems there is no prohibition or dislike in the action mentioned in the question, because the prohibition is qualified and conditioned on the conversation not being about a desirable matter, and on it not leading to missing the night vigil (qiyam al-layl) or oversleeping and missing the Fajr prayer.