Structure blocks will not load structures below Y=0 or above Y=256

Should be a simple fix for the developers as they probably have to change what the lowest y coordinate is allowed to load in.

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Structures are limited to y 0 - 256. We are unable to load structures outside of the old height limits

You can work around by loading a copy of a structure that is set to load with the values you wish. Then just hit load dont try to adjust the values they will automatically readjust if you do.

Place a structure block then load a structure load block then hit load on that block. Its painful I know, but its the only way now.

1.18.1, a datapack attempting to load a structure block below y=0, only those portions of the loaded structure above y=0 load. Anything below y=0 is not loading.