In the Coast area, when I complete a level and the portal opens I'll frequently have the camera change focus and lock to the top of the level. Sort've like the camera would shift focus before the Seal King gets his intro.
I've attached a video showcasing this bug. I'd say it's about 1 in every 4 times I complete a level that I get this bug but I got really lucky and it happened 3 times in all 3 levels during the video. I've normally had it happen once every time I visited the Coast, sometimes none. This was an exception. (I never run Crown of Blood so this could have something to do with the triple occurrence.)