Xojo 2019 Release 3.1
From the documentation:
In order for the styled text to display, you must turn on the Multiline and Styled properties of the TextArea.
In the IDE, I do not see any option to turn off Multiline.
If I do it in code:
taRecentTop.MultiLine = False \\ where taRecentTop is a TextArea in the window
It does not have any effect that I can discern.
So I am confused as to what is even meant by a "non-multiline" TextArea