Textarea text not scrolling if given min-height

When i am adding min-height:100px`overflow:scroll to textarea then after reaching the max limit text is going inside and not visible what we are typing.

its not goning up automatically.

i am using nightly build in my android s4 4.2 version

below code which is working fine without adding min-height. but if its in bottom of the page then it also does not work well its does not auto scroll based on text changing .

	<div class="list">
  <label class="item item-input">
    <input type="text" placeholder="First Name">
  </label>
  <label class="item item-input">
    <input type="text" placeholder="Last Name">
  </label>
  <label class="item item-input">
    <textarea placeholder="Comments"></textarea>
  </label>
</div>