I am using a few collapsible bootstrap panels and instate of collapsing by clicking on the header as the example, I have an icon on the right side of the header that triggers the collapse. The collapse transition has a visual problem when doing that as you can see in the jsfiddle. It shrinks all panel-body content to position where the icon lies. See the JSFiddle for a simplified example.
https://jsfiddle.net/10bLdb5t/3/
Thanks!
HTML:
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<div class="panel-group">
<div class="panel panel-default" id="panel1">
<div class="panel-heading">
<a class="btn btn-collapse pull-right" data-toggle="collapse" href="#collapseOne">
<i class="fa fa-caret-square-o-up"></i>
</a>
<h4 class="panel-title">
Collapsible Group Item #1
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse in">
<div class="panel-body">
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</div>
</div>
</div>
</div>
If you add this style rule
style="margin-top:-8px;"a tag your problem is solved. Don't know if it's the best solution, but it works.