It would help (I think) if after transcribing chord names the chord symbols become deselected. After all the only sensible action that could be taken with all chord symbols selected is to delete them. I find having transcribed chords , the next thing I want to do is play the music; but the first chord I play on the keyboard alters one of the transcribed chords because they are all still blue(probably the last one on the score which is out of sight usually).
Martin