The bug from the first Fnatic vs. SKT game has happened to me twice now

The bug where you use a dash over a wall and then appear back where you started has happened to me twice now. Once as gnar, when I E'd over a wall and then was instantly back on the starting side and it appeared as if I had flashed over it, but my flash had been down for a long time. The second time it happened I was Kha'zix and jumped over a wall and the same thing happened.