Minecraft big sun glitch(edit: screenshot here now)

So I'm not sure if anyone else has gotten this. When i logged into my survival world, the sun was huge. No resource packs on, clouds turned off, no mods. I'm stumped. It fixed after reloading but I've been playing since '11 and never seen this. I saw a reddit thread but again, I have no mods on and I'm not in amplified and it was a 1.7 world from what I saw so quite a while ago. My youtube vid of sun, thumbnail is screenshot, vid is what the sun looked like in game. If this looks familiar to you, let me know.