cue_set is actually supposed to have a double connection with EmitOnDownPress true and false as well (all connections are supposed to have this) but cueSet does not do anything when you depress the button so it is fine. The hotcue buttons need to do something when you depress the button because of hotcue previewing. If you are holding down the button then the cue is previewing, and when you depress the button, the preview stops and it jumps back to the hotcue. I hope that made it more clear :).
cue_set is actually supposed to have a double connection with EmitOnDownPress true and false as well (all connections are supposed to have this) but cueSet does not do anything when you depress the button so it is fine. The hotcue buttons need to do something when you depress the button because of hotcue previewing. If you are holding down the button then the cue is previewing, and when you depress the button, the preview stops and it jumps back to the hotcue. I hope that made it more clear :).