CIRCLE NOTE SCALES ON ITS OWN

I want to place a "circle note" (number with a circle frame around it) with no leader.  I don't have an issue creating the note but if I decide to edit the note to be a different number, the circle around the number increases in size automatically.  If I were to edit the note numerous times it would increase in size with each edit, making the circle way too large and the text remaining the same size.  Also, this issue is not present when the circle note has a leader, only when the circle note is by itself.  Seems like a bug but thought I would reach out if there is a setting I am missing.  see pic below for information when placing the note.  I don't understand what this means.  thanks.