When editing a model on Windows 10 Chrome 72.0.3626.119 (Official Build) (64-bit), the right pane only shows an empty gray area. Showing/hiding the right pane only hides and shows this gray area with no content. This makes it impossible to edit table definitions. Reloading the page did not help.
As a workaround, hiding the left pane causes the right pane to show up correctly.
Customer support service by UserEcho