The first incident may seem small. A little pushback. A missed expectation. A defensive response. A complaint from another employee. A conversation that did not go quite the way you expected.
You address it and move on.
Then it happens again.
Soon, you are having variations of the same conversation while trying to determine whether you need to coach, correct, document, escalate, or simply give the employee another opportunity.
This is where many strong leaders get stuck. Not because they are incapable of leading. They are trying to make a leadership decision while dealing with a person who may be emotional, resistant, defensive, manipulative, inconsistent, or simply difficult to read.
The longer that uncertainty continues, the more attention one employee can consume.