Weird Ranked Queue Bug

So i was playing dynamic queue ranked with my friends and i found a very odd bug that wouldn't allow me to change my mastery page. And they weren't even mine O_o So i asked my friend about it and he told me these were his pages.

https://gyazo.com/d084efc5a3ffb66167bfae3863446bf4 https://gyazo.com/6853e5e25b624ffd19e827ae3c2facfd https://gyazo.com/f12b741c68006b347cbafb1b390bc567 https://gyazo.com/60e6cb23b9b63faeb0c95a22019bbfbf