I used to think that yourself only are able to see the wins of your own ranked games +** the number of games total** when you hover over the tier icon.
The idea is to protect the privacy of the players I assume.
(People in Challenger is excluded from this because their W/L is already shown in the leader board)
However, after the patch today, I noticed I'm able to see the total number of games of any player's profile regardless of their league.
We used to be able to only see the number of wins on the profile.
Is this intentional?