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