When setting the source for autocomplete as an external URL, adding get elements is not possible. For example: This works:

$( "#id" ).autocomplete({source: "file.php"});

This doesn't work:

$( "#id" ).autocomplete({source: "file.php?a=1"});

I think the reason for that is that it results into using this url: file.php?a=1?term=... in stead of file.php?a=1&term=...

For some reason the datepicker doesn't open to previously selected date if I use format that doesn't include day (e.g. 'MM yy'), as demonstrated here ​http://jsfiddle.net/nEGTv/2/

This is related to the question I raised on Stack Overflow ​http://stackoverflow.com/questions/9838473/jquery-ui-datepicker-not-opening-to-previously-selected-date-if-format-doesnt-i

Best Regards, Konrad Borowiecki

If you create a widget (for example : $.mynamespace.mydialog) that inherits from ui.dialog, there is a bug in the $. Ui.dialog._createOverlay method. It throw a undefined error on .data("ui-dialog")._focusTabbable() because the data name should be "mynamespace-mydialog".

_createOverlay: function() {
		if ( !this.options.modal ) {
			return;
		}

		if ( !$.ui.dialog.overlayInstances ) {
			// Prevent use of anchors and inputs.
			// We use a delay in case the overlay is created from an
			// event that we're going to be cancelling. (#2804)
			this._delay(function() {
				// Handle .dialog().dialog("close") (#4065)
				if ( $.ui.dialog.overlayInstances ) {
					this.document.bind( "focusin.dialog", function( event ) {
						if ( !$( event.target ).closest(".ui-dialog").length &&
								// TODO: Remove hack when datepicker implements
								// the .ui-front logic (#8989)
								!$( event.target ).closest(".ui-datepicker").length ) {
							event.preventDefault();
							$(".ui-dialog:visible:last .ui-dialog-content")
								.data("ui-dialog")._focusTabbable();
						}
					});
				}
			});
		}

		this.overlay = $("<div>")
			.addClass("ui-widget-overlay ui-front")
			.appendTo( this._appendTo() );
		this._on( this.overlay, {
			mousedown: "_keepFocus"
		});
		$.ui.dialog.overlayInstances++;
	},