Flushing world *Solved*

We were investigating a problem with global illumination, but were unable to identify the problem, so we decided to revert to a working backup project.

As we were examining the differences with the latest project and incorporating them into the working project, the problem reoccurred at one point.

While changing the differences to be imported, we found that the problem was with the ninth puzzle. The cause was that we forgot to delete the directional light that I had installed for testing purposes while refactoring that puzzle.

We will be more careful in the future, as we wasted a lot of time and effort due to a little carelessness.