Update packages/core/src/components/fields/ArrayField.tsx

Co-authored-by: Heath C <51679588+heath-freenome@users.noreply.github.com>

Author: nlemoine

packages/core/src/components/fields/ArrayField.tsx

@@ -667,7 +667,7 @@ class ArrayField<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends For
 
     return (
       <Widget
-        id={fieldPathId.$id}
+        id={multiValueFieldPathId.$id}
         name={name}
         multiple
         onChange={this.onSelectChange}