Sortable: update placeholder when axis is x or y. Fixed #8274 - placeholder doesn't move when dragging outside of container element

(cherry picked from commit b8b0c52)

Author: Jason Moon

ui/jquery.ui.sortable.js

@@ -468,8 +468,8 @@ $.widget("ui.sortable", $.ui.mouse, {
 
 	_intersectsWithPointer: function(item) {
 
-		var isOverElementHeight = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
-			isOverElementWidth = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
+		var isOverElementHeight = (this.options.axis === 'x') || $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
+			isOverElementWidth = (this.options.axis === 'y') || $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
 			isOverElement = isOverElementHeight && isOverElementWidth,
 			verticalDirection = this._getDragVerticalDirection(),
 			horizontalDirection = this._getDragHorizontalDirection();