Materials look very dark in Material Editor preview

I’m previewing the default mesh (Sphere for all the examples I’ve shown so far) and I can’t recall changing anything drastically. I only changed the automatic exposure under the View Mode settings earlier in the level editor, but then I changed it back to automatic to check whether it has caused the issue. I am not sure what else could have caused the problem, I haven’t changed much. All the materials have this weird shadowing problem.


Is there any possibility to reset the editor settings?