Alright so. I first encountered this rift in the modded stage "Relic Ramble". I just brushed it off back then, but i started seeing some more in some stages. 2 in spaceship, 1 near the torch before the final boss in "The Finale" and 1 more above the Subcon purple rift. Oh and also it emits music. It's from a mod , because when I disabled all of the mods, there was no rift in sight. But from which mod? I have no idea. Can someone please help me? Oh yeah and here is a screenshot of the rift https://files.catbox.moe/jdzffi.png . Forgot to mention that the rift actually isnt always star shaped. Near the alpine skyline telescope the rift has a diftrent shape. Update : Found another one in the arctic cruise. It was in the underwater tunnel.