I am having the same issue. I verified that I am not enqueueing an old version of JQUERY. In fact I am not enqueueing at all. It works fine for the default templates but not in my custom theme. This used to work just fine then all of a sudden stopped. Tried every browser on PC and MAC. I did notice something interesting, when using WordPress default themes it loads:
<script type="text/javascript">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<div id="ui-datepicker-div" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all">
<link id="jquery-ui-css" rel="stylesheet" href="https://localhost:8888/taa/wp-content/plugins/events-manager/includes/css/ui-lightness.css">
<script id="google-maps" type="text/javascript" src="https://maps.google.com/maps/api/js?v=3.12&sensor=false&libraries=places&callback=em_maps">
However with my custom theme it only loads:
<script type="text/javascript">
<div class="time-picker time-picker-12hours" style="display: none;">
<div class="time-picker time-picker-12hours" style="display: none;">
<link id="jquery-ui-css" rel="stylesheet" href="https://localhost:8888/taa/wp-content/plugins/events-manager/includes/css/ui-lightness.css">
<script id="google-maps" type="text/javascript" src="https://maps.google.com/maps/api/js?v=3.12&sensor=false&libraries=places&callback=em_maps">
It’s almost as if the time-picker can’t load the rest of the content and just stops. Any ideas?