Issue 1:
Challenge Target the Children of an Element Using jQuery has an issue.

User Agent is: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.84 Safari/537.36.

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

As soon as the Challenge loads, button with ID target5 is duplicated in the left-well

https://drive.google.com/file/d/0B0-LhUhPNlwlYnRMa2g0TEhSVFU/view?usp=sharing

(Clicking on the link above does not seem to work, however highlighting the link text, right-clicking and selecting go to https://drive.goo....... does work, or just copy and paste the link in a new Tab)

Making any unrelated change in the code, updates the output properly and removes the duplicate target, even if you then remove the change that was made to force the output to update.

Default Code:

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

});
</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>

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>