I tried the following two requests

GET: {ig_user_id}/stories?fields=id,ig_id,permalink
GET: {story_media_id}?fields=id,ig_id,permalink

In any case, permalinks will be returned in the following format

https://www.instagram.com/p/C9_WFqgMQCr/

We expect the following format as permalinks for Stories

https://instagram.com/stories/{user_name}/{ig_id}

Is this a bug? Is this a change in specifications? Does anyone know what it is?

（Translated by deepl）