Issue 1:
Challenge Clone an Element Using jQuery has an issue.

User Agent is: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0.

Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:

<script>
$(document).ready(function() {
$("#target1").css("color", "red");
$("#target1").prop("disabled", true);
$("#target4").remove();
$("#target2").appendTo("#right-well");
$("#target5").clone().appendTo("#left-well");
});
</script>

<!-- Only change code above this line. -->

<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<h4>#left-well</h4>
<div class="well" id="left-well">
<button class="btn btn-default target" id="target1">#target1</button>
<button class="btn btn-default target" id="target2">#target2</button>
<button class="btn btn-default target" id="target3">#target3</button>
</div>
</div>
<div class="col-xs-6">
<h4>#right-well</h4>
<div class="well" id="right-well">
<button class="btn btn-default target" id="target4">#target4</button>
<button class="btn btn-default target" id="target5">#target5</button>
<button class="btn btn-default target" id="target6">#target6</button>
</div>
</div>
</div>
</div>

Once i add the line:

$("#target5").clone().appendTo("#left-well");

The element is cloned once, as expected. But once i click to 'run the tests', it is cloned a second time.

Then, moving on to the following exercise, you can still see this duplicate element. Once i edit the code (anywhere), the duplicate disappears.

But, I think this might confuse some other people, if they see it being cloned twice and believe this to be the 'normal' behaviour for the ".clone" function.

Note: Using the latest Firefox, and tried clearing my browser, etc.

Edit: I also see this duplicate in all subsequent exercises that contain this line. It stays present until any part of the code is edited.

Issue 2:
Challenge Waypoint: Clone an Element Using jQuery has an issue.

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.73 Safari/537.36.

Please describe how to reproduce this issue, and include links to screenshots if possible.

Issue

I believe I've found bug in the phone simulation in Waypoint: Clone an Element Using jQuery:

I entered the code to clone target5 and append it to left-well, and now I see three target5 buttons in the phone simulator. FCC says my code is correct and advances me to the next challenge. The following challenges also show three target5 buttons:

Waypoint: Target the Parent of an Element Using jQuery

Waypoint: Target the Children of an Element Using jQuery

@qualitymanifest confirms this issue on his Linux box.

My code:

<script>
$(document).ready(function() {
$("#target1").css("color", "red");
$("#target1").prop("disabled", true);
$("#target4").remove();
$("#target2").appendTo("#right-well");
$("#target5").clone().appendTo("#left-well");
});
</script>

<!-- Only change code above this line. -->

<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<h4>#left-well</h4>
<div class="well" id="left-well">
<button class="btn btn-default target" id="target1">#target1</button>
<button class="btn btn-default target" id="target2">#target2</button>
<button class="btn btn-default target" id="target3">#target3</button>
</div>
</div>
<div class="col-xs-6">
<h4>#right-well</h4>
<div class="well" id="right-well">
<button class="btn btn-default target" id="target4">#target4</button>
<button class="btn btn-default target" id="target5">#target5</button>
<button class="btn btn-default target" id="target6">#target6</button>
</div>
</div>
</div>
</div>