Was looking to delete a custom island I added beyond the stock 10 and couldn't find a way.

Figured I try to "edit" it and blank out the name, for instance "Custom Island 11" then clicked the "Update Portal ..." button.

When the page refreshes the text "Custom Island 38" is showing as the title. If I repeat this process a random number will show , ie; Custom Island 42, Custom Island 36 and so on.

The custom island doesn't go away and still shows "Custom Island 11" in the main list.