I can see through the world using F3 in the right angle.

I expected to not see through the world.
and see caves and stuff.

Instead I saw through the world.

To Reproduce the bug.
1. Go in a survival world.
2. Press F5 Twice.
3. Look At The Sun Using F5 At GAMETIME 284698
Or If Step 3 To Complicated try to match the picture by the angle or just go up and down using the angle.