This has been happening since the newest update.
Nvidia shield
STB EMU PRO
MPV PLAYER
The only player that works is mpv. The others will not stream.
I have to change the aspect ratio for the screen to go full
If I change a channel it goes to the bottom left corner again and I have to change to a different aspect ratio again. This happens every time I change the channel the picture goes small down to 1/4 size and is in the left hand corner.
Older LG 65" TV uhd.