If TV A is linked to both TV B and C, and media is played on A then only A will emit light.
Steps to Reproduce
Connect the @Video of TV A to the same input of B, C, and so on. Then simply turn on the TV.
What I expected to happen
TV Glow light to emit from all TVs
What happened
Only the original TV has its glow.
Notes / Media
I play on max graphics settings, so I doubt that is the issue. Also for the past year or so the “Cast Shadow” property of all lights seems to be broken, but strangely the TV Glow still casts shadows of players and furniture just fine.