On the current version of Facebook for iPhone and iPad, whenever I tap on a picture someone uploaded, it either brings up a totally different picture, or when I flip over to comments, they don't match the comments that go with that specific picture. It's incredibly annoying if you want to comment on a picture and can't even get the correct one to pull up.
If you use Facebook for iPhone or iPad you're probably aware that it doesn't come without a bug or two. This one we've had several readers report and it's something I've experienced myself since the newer revamped version of Facebook was released.
The only workaround I've found is to actually go in and open the album the picture is in and click on the picture in the grid of photos. That typically tends to load the correct image and bypass the issue.