I saw a similar problem posted elsewhere. I too have this problem. Prior to updating the firmware, when I played a song with no outro, the right switch on the external footswitch would stop the song. Now, it shows stopping but does not stop right away or it flashes red but then goes to a green part. I have checked the assigned functions for the switches several times.
I’m planning on either going back to the older firmware (which I don’t want to do) or going in to all my songs that have no outro and adding a token beat just so I can save a fake or almost blank outro. (I’m really not interested in this either)