Can't get chord symbols to show on "other" players

Wondering if you know the solution to this problem. I have a lead sheet as a 4 horn score. In the trumpet player I created slashes, and chord symbols for the solo section. When I try to do the same thing to other players, the chords don’t show up. Only showing on the top horn player of the main score. For some reason I got them to show on the Tenor sax voice in explicably but I cannot for the life of me figure out how to get the other players charts to show the chord symbols! It makes ZERO sense. And seems to me like it’s a bug. What am I missing???