Unintended Ultimate Cancellation with Parry Key

[Footahn]

I use E for parry and 4 for ult. Frequently, I'll reach for my ult and hit my parry key at the same time. This activates my ultimate and simultaneously cancels it for the parry animation. I feel like this in an unintentional interaction as its not repeatable across all heroes. It happens on Seven most, in my experience. I do have the option to cancel ultimate ability with the ability key selected, and I'm assuming that means the only way to cancel your ultimate is to press that key again. Attached is a video of me testing this, by pressing 4 and after a brief pause, pressing E (parry). Personally, this interaction is infuriating. To have my ult repeatedly neutered in moments when I need it most is frustrating. If the method to canceling the ability is to press the ability key a second time, then make it so. Not by also pressing parry.