Question Problems with Input System in Linux Builds?

So, all input actions are set up.
Plus, 2 HID reports have been made to expand 2 USB/Bluetooth gamepads that do not work out of the box.

In the editor, all works flawlessly -> Keyboard, Xbox controller and the 2 expanded controllers
Same for Windows, Mac & Android (Nvidia Shield TV) builds -> Keyboard, Xbox controller and the 2 expanded controllers work great

Linux build -> the 2 expanded controllers are dead, no reaction. Keyboard and Xbox gamepad input work though.

How can this be? Any ideas? Anything special to add/do for the Linux build?
The 2 controllers do work on Linux, as they are recognized by other games and work fine.


Unity 2020.2.0b14 on Win10 + IL2CPP Linux build support extension
Input System 1.1.0 - preview 2
Sysroot Linux x64 0.1.13 -preview
Toolchain Win Linux 0.1.17-preview