Mirage tornado bug, falling under the world

[Astorias]

I (as Mirage) was using tornado at the Mo&Krill to try to interrupt their ultimate. However by doing so I fell through the world and was temporarily under the map. I continued to fall through the world and returned to the map (maybe in happend due to Kelvin ult?). The match id is 42070083 and it happend between 14:20 and 14:35.