These are known issues with V4.1 some of them have been confirmed and some of them are under investigation:
Fixed in Dev:
- Brightness is not saved correctly on boot (OGA/OGS/GF) (#574)
- Some ports do not have background music e.g. VVVVVV & HCL
- Shader issues
- Two timezone menus in system settings (GH issue #572)
Not yet fixed
Amlogic-ng
- Dolphin needs automatic gamepad configuration (GH Issue #576)
Odroid Go Advance/Super
- Kernel panic (or other random issues, like waking up from sleep) maybe caused by some WiFi dongles (Realtek RTL8188CUS)
Under investigation but not yet confirmed
- Some gamepads do not work with the kill command and error logs