<p dir="auto">form-group inputs render normal. input-groups render too small. The use of glyphicons doesn't make any difference. Different behavior between prepend and append aswell.</p>
<p dir="auto">jsBin: <a href="http://jsbin.com/uTumeWE/1/edit" rel="nofollow">http://jsbin.com/uTumeWE/1/edit</a></p>
<p dir="auto"><code class="notranslate">&lt;div class="form-group input-group has-success"&gt; &lt;label class="control-label" for="inputSuccess"&gt;Input with success&lt;/label&gt; &lt;span class="input-group-addon"&gt;&lt;i class="icon-envelope"&gt;&lt;/i&gt;&lt;/span&gt; &lt;input type="text" class="form-control" id="inputSuccess"&gt; &lt;/div&gt;</code></p>
<p dir="auto">Images: <a href="http://vvcap.net/db/gUxKjP35dh1Dv3_19Qk8.htp" rel="nofollow">http://vvcap.net/db/gUxKjP35dh1Dv3_19Qk8.htp</a></p>
<p dir="auto"><code class="notranslate">&lt;div class="form-group input-group has-success"&gt; &lt;span class="input-group-addon"&gt;&lt;i class="icon-envelope"&gt;&lt;/i&gt;&lt;/span&gt; &lt;input type="text" class="form-control" id="inputSuccess"&gt; &lt;label class="control-label" for="inputSuccess"&gt;Input with success&lt;/label&gt; &lt;/div&gt;</code></p>
<p dir="auto"><a href="http://vvcap.net/db/wU5PelKNhqbCSmDVkLCM.htp" rel="nofollow">http://vvcap.net/db/wU5PelKNhqbCSmDVkLCM.htp</a></p>