Youtube Video (Full Screen).

Okay so, while I was in queue for a ranked game (Diamond 5: 0 lp [Of course]) I saw the new 'Legends Rising' video that I've been looking forward to watching since the trailers have come out. So what do I decide to do in queue? Of course! Watch the video, right? And here's the problem... I obviously wanted it as big as it could get, so I put it into full screen! A minute or two go by, then BAM, game invite. So as you're supposed to do, you click on 'accept' and it brings you into champion select. However, after I clicked the accept button, the whole client disappeared behind the YouTube video that was on full screen. And after a couple seconds the video closed out (crashed or just the client closes out of it because you're not in the home screen anymore). When I go back to the client, its a full gray screen that says "League of Legends has stopped responding", so the game crashed and there was nothing I could do but close it out and have to log back in and wait for the champion select dodge penalty. I probably got lucky I didn't get demoted back to Platinum 1 - I would've been kind of upset.. I don't know if this always happens or if it's just a problem with my computer but if anyone could try to replicate it or a RIOT employee could check it out, that would be wonderful. I just don't want to be afraid to watch a video again knowing that things could go wrong with the game client. Thank you for reading, and have a wonderful day! :)