If I try to open the Editor Preferences, Project Settings, or Plugins windows, nothing happens. I even tried letting it go for an hour and nothing. The taskbar acts as if there’s another window open but said window just shows a white screen with the unreal logo over it. Hovering over to that window doesn’t show anything. This is happening on both 5.7.3 and 5.6.1.
EDIT: Figured it out. Just had to reset the UI layout.