Hello!
My parents' LG webOS TV had this issue where their Magic Remote has gone insane and every button thinks it is the mute button.
I have tried changing the batteries to brand new ones, letting it fully "de-charge" for 10 minutes, de-pairing it, etc. accordingly to the troubleshooting guide. Not even the power button blinks as it should. Oddly enough, the motion cursor works fine.
I have attached a video to show how it looks.
Any suggestions to fix this?
VID-20200327-WA0015.mp4