If I create an accordion with the collapsible option set to true, the head panel remains in a focused state after collapse and the mouse pointer moves away.

    <!-- Accordion -->
    <h2 class="demoHeaders">Accordion</h2>
    <div id="accordion">
        <h3>First</h3>
        <div>Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet.</div>
        <h3>Second</h3>
        <div>Phasellus mattis tincidunt nibh.</div>
        <h3>Third</h3>
        <div>Nam dui erat, auctor a, dignissim quis.</div>
    </div>

    <script type="text/javascript">
        $("#accordion").accordion({
            active: false,
            collapsible: true
        });
    </script>

Though it isn't obvious given the base styling, it can be very obvious based on a custom theme. ​http://jsfiddle.net/othczLL6/1/

Hello,

I noticed a performance problem with the autocomplete control when working with multiple options. When a popup of many options is shown couple of times, the control gets really unresponsive.

Here is a link to jsfiddle to demonstrate and explain the problem: ​https://jsfiddle.net/vm152La3/8/

Best regards

Kari Surakka

I am using a UI Spinner on my Admin UI, and I have recently updated jQuery UI from 1.11.4 to 1.12.1 and noticed this bug.

In the _draw method, when setting the button bindings (lines 14393 - 14400)

// Button bindings
this.buttons = this.uiSpinner.children( "a" )
    .attr( "tabIndex", -1 )
    .attr( "aria-hidden", true )
    .button( {
	classes: {
	    "ui-button": ""
	}
    } );

, there is a call to the button api that, I am guessing will add the buttons inside the anchor tags, however when stepping through this code in Chrome's debugger, it does not step into the jQuery UI Button API, instead it steps into Bootstrap's button API and I end up with empty anchor tags and no visible spinner buttons which you can see in the image linked here: ​https://adobe.ly/2hhHVzi