Having this command on a 1 tick cycle produces the expected result, except in the first tick when the game is loaded.
execute in overworld unless entity aec-0-0-0-1 positioned 0.0 0.0 0.0 run summon minecraft:area_effect_cloud ~ ~ ~ {Tags:["helper_entity"],Duration:-1,Age:-2147483648,WaitTime:-2147483648,UUID:[I;2796,0,0,1]}An entity with the same UUID can't be summoned as it produces an error: Unable to summon entity due to duplicate UUIDs, yet setting the above command to run every tick from a datapack creates two entities upon loading the world.
Steps to reproduce:
Set above command to run every tick
Exit and reenter the world
Run
execute as @e[type=minecraft:area_effect_cloud] run data get entity @s UUIDResulting in two entities reporting/having the same UUID. Note: only one entity is selected when directly selecting by UUID aec-0-0-0-1.
Comments 2
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Thank you for your report!
However, this issue is Invalid.
This is related to a different project. Use one of the links below to go to the correct project.
– Minecraft: Java Edition — Windows, Mac, and Linux
– Minecraft Launcher — Bugs about the Minecraft Launcher specifically
– Minecraft: Bedrock Edition — Gear VR, iOS, Android, Windows 10 (from the Windows store), Xbox One, Windows 10 Mobile, Fire TV, Nintendo Switch, and PS4
– Minecraft Earth — AR Compatible Devices
– Minecraft Dungeons — Action-adventure title set in the Minecraft universe
Please don't forget to search for an existing issue matching yours in the appropriate project before raising a new one.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki