I am still behind one upgrade so I don't know if this was fixed in 5.0.9 or not. I looked through the bug fixes in 5.0.9 and didn't see it.
When I log into my webmail client on FF or IE and go to my sent folder, I can't sort it by who I sent it to. It appears to just sort it by the date sent. I also can't select the size of the email to sort by either. I just wanted to make sure that it wasn't fixed in 5.0.9 before I submit a bug.