"Go to" dialog - Some pages are confusingly suggested multiple times

The "Go to" popup (also known as "jump to any page" - shortcut Ctrl+G) lists "Sandbox.TestPage1" 9 times, "Sandbox.TestPage2" is listed 2 times (2nd is not visible on the screenshot):

This happens even with a clean new XWiki installation and it can be very confusing for users, because they can see the suggested page just once in reality...