Autocomplete Combobox memory leak

[Adam Jimenez]

There appears to be a memory leak with the autocomplete combobox. I can recreate it by going to the combobox demo in Chrome (54): ​https://jqueryui.com/autocomplete/#combobox

And then clicking the "show all items" button over and over. After around 50 times it starts to noticably slow down, keep going and it eventually slows to a crawl.

This is more apparent in my real world app, which is often left open for a long time and can contain many more autocomplete items.

[rd3n]

I am facing the same problem with my own jQuery-UI widget based on the widget factory and using the autocomplete widget internally.
But it is also reproducible with a simple test case (local source with 50 items and no filtering):

• Tested on latest Chrome (57.0.2987.110) and Edge (38.14393.0.0)
• Tested with latest jQuery (3.1.1) and latest jQuery-UI (1.12.1)
• Reduced test case: ​http://codepen.io/rd3n/pen/MpVwLe
• It takes about 10x more time for the suggestion list to be displayed after 30 openings on Chrome

Additional notes:

• Firefox (52.0.1) is not affected
• jQuery-UI (1.12.0) is also affected, but less importantly
• jQuery-UI (1.11.4) is not affected

Edit: Seems to be related to other performance tickets already opened:

• 15082
• 15078
• 15049
• 15152
• 15136
• ...

Edit 2: There is a workaround as described by jGeek314 in 10050 :

search: function(e,ui){
  $(this).data('ui-autocomplete').menu.bindings = $();
},

[Scott González]

Duplicate of #10050.

[Scott González]

In ef2e9ba:

Widget: Improve remove event bindings for classes options

Fixes #15078
Fixes #15082
Fixes #15095
Fixes #15136
Fixes #15152
Closes gh-1769

[Scott González]

#15205 is a duplicate of this ticket.