Problem with Tutorial -> Addressbook

Hello,

last week I called
http://demo.vaadin.com/addressbook/
and all works like a charme, there were 1000 entries and scrolling showed: “Loading …”
Today,
1: only a few rows (50?) are shown and it shows only one column.
2: There is no “delete” button (when selected one row), I saw it last week
3: after creating a new contact, the 3 columns First Name, Last Name, Email are so small, they do not fill the left part of the screen and the data in the (50?) rows now is different.

Maybe this is due to 7.4.4?