cannot feel safe without that.

src/main/java/carpet/script/value/EntityValue.java

@@ -1719,7 +1719,7 @@ public class EntityValue extends Value
             
         });
         put("item", (e, v) -> {
-                ItemStack item=getItemStackFromValue(v);
+                ItemStack item=getItemStackFromValue(v).copy();
                 if(e instanceof ItemEntity iteme)            
                     iteme.setItem(item);
                 if(e instanceof ItemFrame iteme)