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Minecraft 1.9 Clocks
When I tried out 1.9 for myself I made a simple clock and attached it to a command block that says "Chunky" to test if it works from anywhere. After this I teleported 1 million blocks out and the clock still works! I was wondering if this is a new addition to the update, as I didnt see it in changelogs, because in 1.8 redstone clocks will not work from anywhere unless a chunk loader is used. Try for yourself!
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[deleted]
Make sure your out of spawn chunks, since as you said, any world spawn chunks are always loaded
