Didn't notice the kanga until now!
You are right about the dropdown. When I click on it, it reveals the current browsed page. I can live with that. However, I am still curious as to why the full list of recently browsed pages does not appear in the dialogue box, as formerly. I will check the security settings as you suggest. Thanks.
To add to the above, instead of 'browsed pages' the dialogue window now shows a list of items from my main drive.... 'Name/App Data/local/Microsoft/Windows/NetCache...'