Player controls

Hello!
I use Plex with IPTV plugin and before some update (I don’t know which one) i could use L1 and R1 buttons to change channel. But now, i can’t. And the same problem exist with tv series. If I press L1 or R1 this will lead to rewind the video.
I looked at the source code, but no one file have controller configure.
Thank you.

Dublicated post (forum bug)
Original: https://forums.plex.tv/discussion/294636/player-controls
Delete this.