Small mapmaking error/Visual bug on the Twisted Treeline

So, last night i randomly happened upon this little bug on the Twisted Treeline's purple side, bottom right tower. Your champion will randomly either just run inside the wall or float up above it, sometimes slightly floating above and sometimes being lifted out of the screen, FAR above considering the gigantic shadow the champion leaves. I could not manage to get a decent picture of the champion being skyrocketed, since it would last less than a second each time.