I have been playing Witch Doctor on Both the PS4 Pro and Xbox One X for the last few seasons (including Season 20). When playing couch co-op during this time I have noticed a visual bug with the Well of Souls rune under Spirit Barrage.
When casting Spirit Barrage with the Well of Souls rune selected there are no animations to depict the three red spirits that should be cast. Every other rune under Spirit Barrage works as normal. It is just the Well of Souls rune that has this issue. The Witch Doctor waves his hands but no spirits are visually cast. This only appears to happen in couch co-op. When I am the only one playing on my console the Well of Souls rune works as intended and there is no visual bug.
I hope this is something we can get fixed for Season 21. Thanks for continuing to work on one of my favorite games of all time.