Unleavable Fountain Cage Bug

Hello Summoners!

I came across this bug in one of my games, and basically what happened was, I joined to a ranked game and I couldn't leave the fountain even after the wall (that is now surrounding the fountain) was long gone. Every other player was able to leave the fountain except my champ . The problem was solved when I relaunched my client, but it was unpleasant to fall back 3 minutes of farm.

I just wanted to notify Riot that this bug can occur, and to ask you guys about ever witnessing this problem. Thank you for your assisstance.