Frustum culling isn't working properly

[adriengivry]

Description
The frustum culling feature doesn't seem to work (or maybe just the debugger is broken?).

To Reproduce
Steps to reproduce the behavior:

1. Open a scene
2. Add a point light
3. Add a cube
4. Enable frustum culling debugging for geometry and lights (Settings > Debugging > Frustum culling visualizer > check all boxes)
5. Rotate the main camera (180 degrees)
6. Notice that no culling is performed

Expected behavior
The camera should properly cull entities outside of its view frustum

Screenshots