How the Chunk Viewer should work
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Parameters are standard, when I pass the territory and come back it highlights to me those chunks in which I was already.
As a result, it is not clear where the old where the new. Once I saw the kind of chunks, but most likely it was a bug, because I just led me to a dead-end place where everything was painted with new chunks again.
Where clearly passed the player, and stands a portal and some action is done, it shows me as if it were a new chunk.
I came from there.