CPU : Intel I7 3820 3.6GHz
GPU : Nvidia Gtx 1070 Gigabyte G1 gaming (drivers 367.35)
RAM : 16GB DDR 2133MHz
DM : Gnome 3.20
Bluetooth : Atheros Communications, Inc. AR3011 Bluetooth

• Steam client version: 1468023329 (Latest Stable)
• Distribution (e.g. Ubuntu): Archlinux
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

I played Overlord that just released yesterday on Steam on linux. I have this issue when the bluetooth is enabled the game camera moves itselfs. Seems that the bluetooth module is detected as a steam controller by Steam
Virtual-programming helped me with a workaround for their game but it would be nice to be resolved in Steam.
I link the issue on VP github https://github.com/virtual-programming/overlord-linux/issues/6

Here is my log file from Overlord game it could be useful .
eon.txt

1. Enable Bluetooth module
2. Launch Overlord or Overlord II game with steam
3. start a new game or load game
4. Camera move itself while playing

Thank you very much