补充完善

src/app/working-area/working-area.component.ts

@@ -1244,7 +1244,7 @@ export class SinglePointIcon extends PIXI.Container {
           }
         }
         // 如果链接对象不为空,禁止移动
-        if ((this.workingArea.allowEdit || this.assetData.GameMode === 2) ) {
+        if ((this.workingArea.allowEdit || this.parent !== this.workingArea.backgroundImage) ) {
           event.currentTarget.parent.data = event.data;
           event.currentTarget.parent.alpha = 0.5;
           event.currentTarget.parent.dragging = true;