No Extent in Tiles property in Water System anymore?

Hi all!

Im a newbie to UE5 and trying to build a water material and apply it to UE5.4 default water system. I noticed that there should be a property called Extent in Tilesin Water Zone actor, so developers can decide how many tiles will be built for the ocean mesh. But in UE5.4, the property is missing (even documentation indicates that it should exist even in UE5.5). Im wondering if it has been moved to another place, or just completely removed?

Thank you for any reply in advance!

Documentation:

UE5.4: