Corki's Passive disappearing (Mordekaiser Ult)

Mid way through my fight with mordekaiser, he ults me, after a couple of seconds my package (Corki's Passive) arrived. After i went back to spawn to pick it up, it wasnt on either side, but the icon for the package was on both sides on the mini map, and the package itself wasnt there, so basically the package was forever stuck in his realm. Plz fix my poor corki