Current support
- Steam lists Shared/Split Screen Co-op and Shared/Split Screen.
- Update 16 isolates map and camera controls per player.
Update 16 fixes
- Quantity prompts, save confirmation, skill menus and trainer hints
- Compass markers for players joining later
- Lockpicking cameras and screen effects
Evidence boundary
Network, platform and old-save edge cases vary. Treat the official fix list as a starting point and record reproducible exceptions rather than assuming one universal cause.