textAngular toolbar changing height

Question

I'm using textAngular as a wysiwyg editor.

But i got problem with displaying the toolbar properly.

From the pre (quote) button on, the icon height jumps from 47*34px to 39*28 px and jumps back again to 47*34px at charcount() icon.

here is my html :

<div class="container-fluid">
<div class="row">
    <h1 class="col-sm-12">Select the kind of evaluation you want to achieve</h1>
</div>

<div class="row">
    <ul>
        <li ng-repeat="template in templatesList">
            {{ template.name }}
        </li>
    </ul>
</div>

<!-- <div ng-show="htmlVariable">{{ htmlVariable }}</div> 
-->

<div class="row">
    <div class="col-md-12">
        <div text-angular ng-model="htmlVariable" class="ta-editor"></div>
    </div>
</div>

and here's the result :

thx for ur help in advance