angular material md-input-container won't center vertically

I'm using angular material for designing my project. Now I want an input for searching in my toolbar, just like youtube.

My code:

<md-list flex-offset="10">

    <md-list-item layout-align="start center">

        <md-input-container md-no-float flex>

            <input type="text" placeholder="Search" flex>

        </md-input-container>

        <md-button> test </md-button>

    </md-list-item>

</md-list>

The toolbar tags before my md-list looks like this:

<md-toolbar layout="row" flex style="max-height: 60px;">

    <div class="md-toolbar-tools">

What I've tried:

• Wrapping it inside a normal div and setting layout-align to start, center.


• Using a form tag to wrap the input container.

Problem:

The input group won't center vertically, and this is what I'm after. Every other directive I've tried centers perfectly like the md-button.

Is this a bug or am I doing something wrong?

Edit (Added picture comparing, md-input-container, input, md-button):