RetroArch only lists and accepts input from one controller connected to a WebOS TV (when two are connected)

Description

RetroArch only detects one controller connected at the time. When I connect more than one controller to the TV, be it via USB or Bluetooth, although WebOS detect them all, RetroArch only detects one and accepts input from one. (I used Xbox 360 wired controllers and XBox One via Bluetooth).

Expected behavior

List and accept input from all the game controllers connected to the TV.

Actual behavior

Only lists and accepts input from one controller when one or more are connected to the TV.

Steps to reproduce the bug

1. Install RetroArch on a WebOS TV (I did ir via Homebrew Channel on a rooted TV)
2. Connect one controller to the TV via the WebOS Settings Menu (Bluetooth) or simply to the USB port.
3. Open RetroArch

Bisect Results

Only ever tried connecting more than one controller now, so can't trace if it was always like this or added later.

Version/Commit

• RetroArch: 1.17.0 [WebOS]

Environment information

• OS: WebOS

Start by reproducing the issue on a WebOS TV with multiple USB or Bluetooth controllers, using the controller enumeration and input-handling entry points in RetroArch. Confirm where only one controller is listed or accepted, then verify that all connected controllers appear and provide input.