Veselina is right. If a new user posts a question then this question goes into pre-moderation and has to be approved by a moderator.
If this new user is following his own question then the activity is is shown to you because you are following the tag where this happened.
In my opinion this should not be shown at all. If SAP is able to hide the preview of the question when it is in pre-moderation then it should not be at all a challenge to hide the whole activity.
lets ping sajid.amir4