bug
https://codepen.io/anon/pen/YvgprG?editors=1111
there is single 'x' button
there are two 'x' buttons
desire for perfection

The black X on the left is inserted by the browser, not material.
Use this to globally remove them from your site:
::-ms-clear {
display: none;
}
But if you just want to remove them from md-autocomplete, use this:
md-autocomplete ::-ms-clear {
display: none;
}
thank you!
Most helpful comment
The black X on the left is inserted by the browser, not material.
Use this to globally remove them from your site:
But if you just want to remove them from
md-autocomplete, use this: