Team Builder and looking at people's profiles messes up your own masteries?

I found this whilst playing with a few of my friends on EUNE yesterday (posting from an NA account, I'm actually a Plat V, on an eune smurf) So I would go onto teambuilder and select my masteries and runes and everything:

http://i.imgur.com/rLf2jwE.png

I was interested in seeing what my friend had for runes and masteries:

http://i.imgur.com/92BrUyS.png

http://i.imgur.com/Et4ikid.jpg (They suck ^-^)

And when I clicked back onto the home button on the top to go back to the teambuilder game, this happened:

http://i.imgur.com/YOkKnow.png

When trying to change the masteries:

http://i.imgur.com/DcVfPg1.png

Thanks for taking your time to look at this and I gladly appreciate it (: It's not anything big or game breaking but it's still worth checking out I suppose.