Zero XP Orbs dropped when defeating the Ender Dragon

I just killed the Ender Dragon for the first time in a new world and received ZERO XP. The egg spawned properly and the portal back to overworld opened. However, NO XP orbs dropped. NONE. So frustrated right now I am beside myself. No, not my first time killing the dragon but the first time in this new world and I died way too many times to finally beat the dragon and receive no XP.