Finally, got a hit!
But from IPrefs
And really I was asking for it, since it really got confused as to what I am doing
So.... WB, DO5 custom screen, and DO5 on WB! (You get a warning doing so!)
Anyway, screenmode switching works for WB+DO5 simultaneously, pens are released for WB, DO5 and DO5 custom, all running fine, no confusion as to what task holds what.
