Shen hexflash bug (please keep)

If Shen uses E while channeling Hexflash, he'll perform a much slower moving dash which lasts longer, dealing the same damage and taunting at the expense of dash speed. I thought the slower dash might have a movement rate equal to your movement speed, but it seems to have a fixed, slower speed no matter what you stack. I'm sure this bug has something to do with the pathing information of Hexflash's channel, but I think it's interesting nonetheless.

It's known that Shen's taunt has an interaction with flash at the end of its dash that allows its cc range to be extended, but this is just another application of the spell with summoners that makes for a higher skill ceiling having this option of a longer active taunt.