Hello,

I'm a bit new to Blender. I made a sphere in a room and everything is fine except the ceiling: it reflects on the sphere but there's a bit of it which is like the plank floor.

It's all perfectly rendered in the preview but when I hit F12, there's this bit of plank on the ceiling and I don't understand why. Also there should be a light on the ceiling but it's not there, there's just plank.



Thanks