3d in monoscopic - Problem ?

Hi,

i run LibreELEC 8.0.2 on a Odroid C2. Before i changed my system, i run it on a Rpi3.

Now i want to play a 3D-Movie in monoscopic, but the movie runs ob a 2d-TV HOU or SBS. I know the system works good to play 3d in monoscopic with LibreELEC 7.