Stream photo-item's text need transform to photo description [MOVED]

I made a screenshots with exampple.
Stream's text should be photo's description. It is the same content, the same photo with the same comments and reactions.

I'm not sure is it a bug report or suggest, but... I suppose it's a bug and can be fixed soon

I aware that:
"stream item with photo" and "photo in popup" it's a little bit different.
"stream item with video" and "video page" it's a little bit different.

So I like how it works with:

When user post comment to "stream item with video" => Video get this comment too
When user react to "stream item with video" => Video get this reation too
When user add comment to "stream item with photo" => Photo get this comment too
When user react to "stream item with photo" => Photo get this reation too

But JomSocial, for example has one more:

When user add photo(s) to stream with some text => This photo(s) get text as description.

Without this, it is sometimes difficult to understand what commentators talking about (if look at photo at popup).
For example:
1) User1 post to stream photo with cute puppy and ask (in stream) "You like cats or dogs"?
2) Commentators answers: "cute cats", "cats", "cats"
3) User2 just looks photos in popup (in Story album)
Result: User2 see photo with puppy and lots comments 'cats". User2 can't understand why commentators writes "cute cats" if there is a gog on photo.

Thanks.