Board Thread:New Features/@comment-44405128-20200615163324/@comment-168424-20200615213354

I will point out that I was assuming the OP wanted a direct IP block and not the existing feature which probably works as intended, just not how the OP wants.

If you read it carefully: "Automatically block the last IP address used by this user, and any subsequent IP addresses they try to edit from"

This means blocking will block by username and not IP specifically, because there is no way to determine "any subsequent IP addresses they try to edit from" based on only the IP.