Ability to spy on Player's champs and masteries in its entirety

Found a way to look at any person's entire champ pool (Owned champs versus non owned), as well as their masteries on every champ and also if they received a chest or not. So pretty much the entire champion page on a person's personal profile. Pretty much what you have to do is go onto your profile page, go into your champs page, then go into the profile page of the person, go back to your profile page, and then go back into your champ page. You should now be able to see the effect. (Tried this on my main account [Metalrichdog] and on my smurf account [xMasterWolfx] and saw the same results so it's not an error based on login)

Pretty sure this is not intended, but it's not a major bug either. https://gyazo.com/054a1cd6f6f86d8d0dca610cbf1cbe3c This is my friend's champ page (Shows that you can search available ones). My smurf's champs: https://gyazo.com/5d1d5d2799dbec57532ccac9672d5dc4