I am unable to feed video preview to the 3rd monitor.
Mac sees and extends desktop to 3rd monitor, Premiere lists it in its Playback devices, but no signal gets sent to the checked monitor (Mercury Playback Engine enabled). 2 USB-C Displays + 1 HDMI Video Monitor.
I re-installed 2 previous Premiere versions as a test, but it did not enable the preview.
Is it macOS or Mercury issue once again, or something else?