Using the Redraw Screen command does make a difference. The chord does not appear immediately but does pop up after using Command+D. I am using version 26.0.1.706 on a 2013 Mac Pro running Mac OSX ...
In measure 5 when I click on the chord tool to indicate a G minor 9 chord, i get the four arrows in the margin but the Chord Symbol doesn't actually appear on the page until I use the Zoom Tool ...
Thanks for the response. I followed your advice but there is no change. When I click on a measure or notes to input a chord symbol, four blue arrows show up in the margins but I don't actually see ...