I have tested this item ✅ successfully on 3f3655d

@brianteeman could you have a look at the wording, thanks

Just one question, shouldn't it show "Article Category Tree" in the heading? Because I saw a change specifically for it in administrator/language/en-GB/com_categories.sys.ini if I'm not wrong.

Not sure :-)
Maybe shorted to:
List All Categories in a Category Tree - because "Contacts" already there.

I prefer consistency but there are two different styles here
"Shows a list of all categories in the selected category tree."
"Shows a list of categories within a contact category tree"

technicaly it is "in" not "within" as it includes the top level item in the tree as within==inside
So can we please change them all to match the first example
ie "Shows a list of all categories in the selected contact category tree."

These two need to be swapped
COM_CONTENT_CATEGORIES_VIEW_DEFAULT_TITLE="List All Categories in a Category Tree"
COM_CATEGORIES_CATEGORIES_VIEW_DEFAULT_TITLE="List All Categories in an Article Category Tree"

and I agree with @ChristineWk about shortening all the titles

I tested it suscessfully with the patchtester on 4.0.0.-beta5

I think the intention was to keep it clear for the user once they have selected the option. It could be that the option in Article section was missed because Contacts and News feed have it. Rest, @chmst could comment on it better.

Thanks for testing and advice. For articles, contacts and news feeds the strings should follow now the suggestion of @brianteeman