Boostrap 3 : alignment problems of an input control inside nested "row" div class - twitter-bootstrap-3

Question

I am using Boostrap 3. Is it normal that an input control inside a DIV with "row" class is not aligned left with the parent ?
It is shifted on the left. I think it might be a bug ?
Is there a way to make it aligned properly without tweaking CSS (meaning through Bootsrap-only CSS classes).
Please find the demonstration of the problem here :
http://jsfiddle.net/7vRQr/2/
<div class="col-xs-11">
<div class="row">
<div class="col-xs-offset-1 col-xs-10">
<h2 class="main-info-title">Following input should be aligned</h2>
<div class="row">
<input type="text" class="col-xs-12" placeholder="But it is not aligned on the left"/>
<label class="col-xs-12">But I am aligned!</label>
</div>
</div>
</div>
<span class="col-xs-12">So texts are aligned, I would have expected the input control to be aligned instead of the text inside the input</span>

Answer 1

Try this :
<style>
.form-horizontal .control-label {
text-align: left;
}
</style>
<div class="container">
<div class="row">
<div class="col-xs-10">
<h2>Following input should be aligned</h2>
<div class="row">
<form class="form-horizontal">
<div class="form-group">
<div class="col-sm-12">
<input type="text" class="form-control" placeholder="textbox">
</div>
</div>
</form>
</div>
</div>
</div>
</div>

Answer 2

Might be the only one facing this issue...
Well, so for now I wrap every form control (input, textarea, select) inside a div with col-xs-12, and then it works OK.
So in my question, replacing this :
<input type="text" class="col-xs-12" placeholder="But it is not aligned on the left"/>
By this (encapsulating inside a div with col-xs-12) :
<div class="col-xs-12">
<input type="text" class="col-xs-12" placeholder="But it is not aligned on the left"/>
</div>
Fixes indentation issue. Please find the fully updated example here :
http://jsfiddle.net/7vRQr/5
Anyone with information about whether it is a bug or not (seems like one) or any other method to workaround is highly welcome. Because this solution does add a lot of extra HTML markups.