Does anyone know that is this issue in progress at the moment?
I have this same problem in my S905W (wrxtasy's LibreELEC-S905.arm-8.2.5-Chroma.422.10bit).
1920 x 1080i with HW deinterlacing "On":
With HW deinterlacing "Off":
I have also tested it with newest CoreElec without any change, same problem (Red line appear on live tv(pvr) - Kodi - CoreELEC Forums)
It would be nice to get this fixed. I was petty disappointed to find this. They say that in Amlogic 1920 x 1080/AVC/MKV/25.00fps - Interlaced shoud have "Excellent deinterlacing".