vaddin 7.6.0.alpha2 is having alignmet issues.

In my apllication i am using
dashboard menu
example provided by vaddin .
when i changed vaddin version
7.6.0.alpha2
then
left menu
alignment is
disrbuting
.

examnple
.
in left menu we have
theme selection.
search
textfield
and
tree
component these are added into vertilclelayout.
but when expand tree component then according tree label, textfiled should increase its
width. but this one is
not happening (working)
in vaddin
7.6.0.alpha2.

but when i change in
vaddin 7.6.0.alpha1 version
it is
working fine.
according to tree label width textfiled increse its width.

have you tried 7.6.0.beta1?

but for
7.6.0.beta1
version dont have maven dependency.
i am getting
Missing artifact com.vaadin:vaadin-server:jar:7.6.0.beta1