I mean, during the album showcase gigs.

I thought it was Jon's best ballad in years and a real dark horse at the end of an album. Yet, it was one of the two songs (from the leaked Deluxe version) ommited from the setlist.

I really don't get why - it's super easy vocally, the instrumental parts are easy as well. It's not like those shows were long. I get that there is a drum loop, but other pop-rock bands (U2, Coldplay, etc.) have used loops in live performances. The backup vocal outro could also be playbacked, I would've been OK with that. Or, to make it even better, they could've easily done an organic live version with live drums and live backing vocals. Either way, it's much better than not playing it at all...

Did Jon address it in between songs or in any way? Or at least does anyone here have a decent explanation as to what could've been the reason?

The worst part is, the fact that it wasn't played in the 4 shows means that it won't get played ever