If, accidentally, you were missing a column on your Projects list on the Projects page which you know was there before, don't panic because someone may just have unintentionally hide it using the Project Column Show/Hide feature.

By simply clicking on the Hamburger icon at the top right of your Project List (see screenshot above), it will populate all of the default columns on your list.

To show the column on the list, just tick the box beside the column title from the pop up as shown above.

To hide, simply untick the box beside the column title.