Alternately you could replace the TextBox(Multi-Line) with a simple Text widget. Originally I added the MultiLine variety because the descriptive name led me to believe that a simple Text widget would not allow multiple lines. They both allow this.
The actual difference is that when using a mouse, the TextBox(Multi-Line) is editable at runtime by clicking on the game screen. I noticed this later by peering at the popup comments. I would recommend Epic rename that widget to TextBox(Editable) because it definitely seems like the defining feature.
In fact it gets even more confusing, as if 2 different devs coded these 2 widgets without discussing it together (just speculating):
The first widget shown: EditableText(Multi-Line) has a tooltip that claims “Editable text box widget”
The second widget shown: TextBox(Multi-Line) has a tooltip that claims “Allows a user to enter multiple lines of text”.
When dragging both widget classes into the Designer window and checking details, it seems that they have properties which seem to alter them in very similar ways but the names and hierarchy of the properties are mixed up between the two (one has “Style/Style/TextStyle” while the other has most of that stuff under one heading “Appearance”.
I would guess some housecleaning needs to be done, and won’t be shocked if this course is broken by a future update. Hopefully this all provides learners with some clues as to how to fix it later!