Elements apear only after inspect element

I have just encountered the strangest problem I've ever come across in my humble web developing freelance career. I'm building a web application for a job application site where applicants use their webcams to answer 3 short questions. For this I use a jQuery plugin called ScriptCam which uses Flash to activate the user's webcam. I had this all working just fine but now I have the following problem.

I use jQuery .show() and .hide() to show and hide buttons. One button, a replay button, doesn't show up when calling $("#replay").show(); but DOES show when I right click anywhere in the browser after calling this command and hit "Inspect Element"! I've been searching for what could cause this problem but haven't found anything... What could cause this behavior?

This is how I have defined the button:

<div onclick='replay();' id='replay' class="replay">Replay</div>

This is the button's CSS:

    float: left;
    top: 150px;
    left: 60px;
    z-index: 100;
    -webkit-box-shadow: 0 12px 36px -16px rgba(0,0,0,0.5);
    background:url('../img/button-grey.png') no-repeat 100% 100%;
    background-position: center center;
    color: white;
    width: 140px;
    text-align: center;
    padding: 10px;
    cursor: pointer;
    font-family: Archive;
    display: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;

Edit: This is CSS of the button's parent div:

    margin-left: 100px;
    height: 337px;
    width: 300px;
    float: left;
    text-align: center;

I haven't used any delays anywhere and the button really appears only right after I click inspect element somewhere in the browser. I also cannot reproduce this problem anywhere else. Anyone got an idea what could cause this? Any help would be much appreciated, thanks in advance!

Update: It appears that only Safari on Mac is having issues.

Update 2: When moving the button out of it's parent div to directly below the body tag it works as it should! So it's probably a css conflict of the parent div?

Edit: You can see the problem live here, just hit the button "Volgende vraag" en wait for the small video to finish. After that the replay button should appear right above the video.



I've found the solution! The problem is caused by an earlier container div which has the CSS display:none. Although I change that with jQuery's .show() before the problem occurs and it's contents are visible, removing display:none in my CSS makes it work! Thanks for all the great help and suggestions!


For me I had to change the visibility of an element that I found hidden above the image in my stylesheet to fix the issue. I found it by using inspect-element. Then after changing it the image moved up obviously so I had to change the margins to change it back to its original position.


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