Adding my case to this thread since I'm hitting the exact same issue.
Stuck in the Meditation menu (Rooftops area) - the B/Exit button does nothing and I can't leave the menu.
I've tested extensively to rule out hardware:
- 3 different controllers (generic third-party, official Xbox Wireless with updated firmware, official Luna Controller)
- 2 different devices (Smart TV and Android phone)
- Reinstalled the streaming app completely
Same result every time - B works fine everywhere else in the game, just not in this menu. Playing via Amazon Luna cloud gaming, so this seems to be a save-state/server-side bug rather than a local/hardware issue.
Hoping for a fix or a way to force-unlock the save. Following this thread for updates.