Hi,
when you search an url under monitor & analyse -> diagnose-> url-category search and type in something like: "https://www.facebook.com/" you got an error message like: "You must enter a valid value for the URL search".
Sorry my configuration is in german so maybe this is not the 100% correct wording.^^
When you just type in "facebook.com" there is no problem but i think it would be more confortable, when i can just copy&paste the original url and put it in the search box without any errors.