dying mid ult sometimes has you in the respawn period as a skeleton. a good way to recreate this is probably to.. well die while ulting. it's a funny bug though
In game during the match, I got to jump around as a pink skeleton doing aerials for about 20 minutes and I've never been more in love with the game.
Think we gotta make the hard decision and flag this one as Won't Fix
Video captured from replay, and unfortunately it loads the correct textures/skin on respawn but does at least show the conditions for creating the condition.