A title can become uncomfortable after the work beneath it changes meaning.

Titles are given for one version of a job, and then the job moves. What you are called can end up describing something you no longer do, something you would rather not be associated with, or a level of responsibility that no longer matches. The discomfort is not vanity; it is the ordinary friction of a label that has stopped being accurate.

Write down what you actually spend your week doing and compare it with what you are called. If they have separated, that is worth a conversation, and it is easier to have while the gap is still small.