[Suggestion]: Misspelled words not underlined in outliner

In the main text of an outliner entry misspelt words are not underlined in red. They are underlined in the inspector.
Is this a bug or expected behaviour?

Confirming the behavior.

This behaviour appears to match with the Mac version, so I won’t write it up as a bug, but I will mark it as a suggestion for us to look at sometime after release.