Case statuses in case type configuration page are not ordered by their weight.
In the case type settings/config page, where we have a tab for 'Case status' that lists all case statuses from which we can select the ones we want for that case type. This list of case statuses are not ordered by their weight which would the correct way to list these.
I have added a screenshot of the page when adding a new case type. In this the case status 'first' has the lowest weight and so I expect to see it on the top of the list.