No it is not. It’s related to an issue in Roon, see here: 1.8 Audio devices in Settings but not in Zone picker [Ticket In]
The reason that for @Thomas_Prossima1 it doesn’t happen that often anymore is the same: something goes wrong when the zone comes up in Roon (see above link), but with DAPM enabled the DAC powers down after a while and thus deregisters from Roon. And becomes active again when you start playing.
With DAPM enabled you just trigger the Roon issue more often, that’s all.