I have a playlist with about 1000 videos in it. On its page, when I click an arbitrary video, it plays the video and shows me the playlist to its right. When the video has finished, a random video is played. I did not expect this.
If I click "play all" on the playlist's page, it starts at the beginning of the list, but only displays 200 videos to the right of the video player, so even if they were to play in the right order I can't select the one I want to start from.
Here's an example where I'm hovering over the "play next" button (mouse cursor not visible):
I was hoping that I just don't understand how playlists work and that I've misunderstood something basic. However, I have a suspicion that Google's UI design team has been involved and that all hope is lost.
Does anyone know how to work a playlist?