How to kill Tryndamere through his ultimate.

Watch the video he explains the bug pretty well. I know that the amplified damage claim is true because I died through my ult to If you simply search "Tryndamere Ultimate" on the boards you'll easily find the bug dating back 3 whole years. Why nothing has been do to fix this is beyond my knowledge. But after losing a ranked game due to this bug. I just want something to be done. FoggedFTW2 Best Tryndamere in arguably the world has died to this very bug, and used to ban because of it.