I have a timeline with 2 Audio and 2 video tracks (V2 above V1). When I add a new video track it goes on top and is named V1. The timeline arrangement is now V1-V2-V1, the top V1 is black, that means if I make it visible, no image is displayed in the record monitor, all video tracks below are blacked out.
In other cases, after adding a new video track to a 2-video-track timeline (V2 above V1), it goes to the bottom and is named V1, the timeline arrangement now is V2-V1-V1. The bottom V1 is black.
The default setup in the timeline fast menu does not change this alignment.S