Yeah, thanks, been to all these places already,sleep included (except setsid in Wayland but I doubt that’s the crucial issue). And yes it does work, sort of - the problem is that the apps exit spontaneously at some point later - sometimes hours, sometimes days - which absolutely does not happen when I launch them in whatever “official” way. In the end I just gave up. Needing a sleep hack is a bit of a red flag after all.