fix:

public/static/lib/potree/potree.js

@@ -96798,7 +96798,7 @@ ENDSEC
 	            this.domRoot.appendChild(elUnfocus[0]);
 	            
 	            if(Potree.settings.editType != 'merge'){
-	            
+	             
 	                let elHide = $("<input type='button' value='隐藏点云'></input>");
 	                elHide.css({
 	                    position : "absolute",