I’m fairly certain there is another one that this is a duplicate of. I saw this yesterday when we were adding some others back. I don’t know the ticket off-hand but I’m fairly certain that one was pushed to the public issues site.
I’m also sure that the duplicate in question was a feature request and not a bug report since landscape LODs only work with X and Y and do not take Z into account. I’ll see if I can find that tomorrow morning for reference.
EDIT: Actually did a quick search and found it here: UE-16660
EDIT 2: Sorry, my response was intended for Hevedy and the Landscape issue.