Ion-nav-buttons isn`t vertical aligned in new Android versions

Here is my code:
            <div class="title page-title" >
                <div class="title">title</div>
        <ion-nav-buttons side="left">
            <button class="button button-icon ion-help-circled" ng-click="goTo()"></button>
        <ion-nav-buttons side="right">
            <button class="button button-icon ion-ios-gear" ng-click="goTo()"></button>

In Chrome it looks ok:

But in Android device with android version 4.4.X buttons not aligned vertical, they are closer to top:

How can i fix it?