Since one of the newest version of dbus-switchboard, there's a change in the camera app. After you shoot a photo, there's a bottom icon you can press and opens the photos default application - but after dbus-switchboard the photo gets opened in the browser.
Also the application manager opens photos (jpgs) in the browser instead of the photos application.
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This could be either a feature or a bug
I prefer the old association to hildon-image-viewer, though. Hope that can be restored.

EDIT: I tried to associate jpg files with this xref:
trying the various types of parameters, but images don't get opened.