Single photo in popup display arrows to list photos (but photo is only one)

Hello.
1) User1 upload 5 photos to stream
2) User2 open 1 of 5 photo in popup
3) User2 react to this photo
Result1: stream item appear about “User2 reacted to it” that display one photo (screen attached)
4) find this stream item and open photo in popup.
Result2: Photo in popup display arrows left and right. But when press on it, nothing is happen. This arrows are confusing.

Expected result: I suppose arrows shouldn’t appear in popup if there is only one photo for viewing.

Thanks.