Oh, I just noticed the same while editing a whisper, but I wasn’t sure if it used to say “Save edit” or anything other than “Whisper”.
That regressed in UX: Composer actions menu should display the icon of selected action by OsamaSayegh · Pull Request #12449 · discourse/discourse · GitHub
I think the desired UI is “icon + save edit label” in those cases.
cc: @Osama