One interesting thing I noticed while leveling my Kaiser is that I could make Blade Burst hit both platforms of Aliens if I jumped and held the skill key. This is odd because 1.) the skill requires you to be on the ground to use it, and 2.) if you're on the ground, you can't hit both platforms.
My best guess is that key repeat kicks in and somehow activates the skill some time before you graphically land (theoretically faster than a human could mash the key). This is possible if the game performs physics, processes input, and then renders the scene in that order. Physically, the game has determined that your character is on the ground, but it hasn't shown you yet. Iff the skill effect is instantiated at the render position of the character as opposed to the physical position, the skill could be activated at a location higher than the ground, possibly explaining this phenomenon.
Has anyone noticed this with any other skills?