Sion ult interruption bugs

So, there are some incredibly annoying Sion ult interactions that I'd class as bugs that just lost me a game. Firstly, dashing with a champion into the back of Sion's ult interrupts his ult. Doesn't make much sense. Secondly, Akali can use her invisibility pool thingy to juke Sion's ult and interrupt it at the same time, thereby not getting stunned but ending Sion's ult as if you'd hit her, when you've not because she's juked your ult. Understandably, these are pretty annoying things to deal with when you're trying to backdoor to end the game, and lose the game as a result.

I'd share the Akali bug clip but I'm not seeing any way to upload files to this website. It's 2017 riot, come on. Something that allows you to upload LoL video files to the LoL website might be called for.