How to stop XP Orbs from spawning in Minecraft: Windows 10 edition
Solution 1:
You can use the same command that you used:
kill @e[type=xp_orb]
However, instead of inputting it into chat, you can put it into a repeating command block set to always active, so it actively removes all xp orbs in the world. It is helpful if you disabled commandBlockOutput as well, to prevent chat clogs. I hope this helps, and correct me if something is wrong.