I'm trying to display a header with buttons and statusbar, but the status bar appears in the next line of the butons, not in the same.

It's a similar error than here (you can see an image to understand better):
http://stackoverflow.com/questions/21908141/how-to-display-button-and-status-bar-items-in-line

Here's my header view code. Any sugestion?

<header>
                        <button name="action_button_quot_to_customer" states="0" string="Send to Customer" class="oe_highlight" type="object"/>
                        <button name="action_button_quot_to_draft" states="1" string="Review" type="object"/> 
                        <button name="action_button_quot_won" states="1" string="Won" class="oe_highlight" type="object"/>
                        <button name="action_button_quot_lost" states="1" string="Lost" class="oe_highlight" type="object"/> 
                        <field name="state" widget="statusbar"/>  
</header>

By the way, I just found it only happens in Chrome, it's OK in Firefox.