Why does a post on FB reads "shared with friends" yet it shows the cogwheel icon?

When I post on a friends timeline on FB it shows the cogwheel icon but when someone else posts on his timelines it shows "shared with friends", how is

When I post on a friend's timeline on FB it shows the cogwheel icon but when someone else posts on his timelines it shows "shared with friends", how is that possible?

or:When I post on a friend's timeline on FB it shows the cogwheel icon but when someone else posts on his timelines it shows \"shared with friends\

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