Gw2014r2hp1 find works differently

I need to find mail I sent to a certain person. We’ll call him lbeethoven.
Using tools>find
To/cc = lbeeth
Item type = mail
Item source = sent
I get no results. This used to work in version 2014. Now that I’m working in 2014 r2 hp1 I have to search for the full id of lbeethoven. Is this a bug or it is just my environment? Can anybody confirm or deny?