New scene. Deactivated Directional Light so you can see it better. Changes colors sometimes while using the editor, sometimes reacting to my cursor movement, often when scripts are compiling, and on play. It always grabs from the colors of the skybox. It is affected by post processing. Objects and UI can sit in front of it. Very strange little line…
Same problem
@Lylek did you manage to solve it somehow?
Ya! For me, this was an issue with an asset I purchased. A water asset. I disabled the caustics feature on the ForwardRenderer.