ACP2E-980: Customizable options Drag and drop issue

Author: Anna Bukatar

app/code/Magento/Ui/view/base/web/js/dynamic-rows/dnd.js

@@ -124,7 +124,9 @@ define([
                 originRecord = $(elem).parents('tr').eq(0),
                 drEl = this.draggableElement,
                 $table = $(elem).parents('table').eq(0),
-                $tableWrapper = $table.parent();
+                $tableWrapper = $table.parent(),
+                outerHight =
+                $table.children('thead').outerHeight() === undefined ? 0 : $table.children('thead').outerHeight();
 
             this.disableScroll();
             $(recordNode).addClass(this.draggableElementClass);
@@ -135,7 +137,7 @@ define([
             drEl.instanceCtx = this.getRecord(originRecord[0]);
             drEl.eventMousedownY = this.getPageY(event);
             drEl.minYpos =
-                $table.offset().top - originRecord.offset().top + $table.children('thead').outerHeight();
+                $table.offset().top - originRecord.offset().top + outerHight;
             drEl.maxYpos = drEl.minYpos + $table.children('tbody').outerHeight() - originRecord.outerHeight();
             $tableWrapper.append(recordNode);
             this.body.on('mousemove touchmove', this.mousemoveHandler);