It doesn't seem to be in their tracker. Mapillary had a similar problem, it turns out that the camera API was updated to provide the orientation sensor orientation and they were using the older API on a phone with a rotated sensor.
Yes, most all of these were produced with an early beta of the apps. Has since been fixed. There's still a known issue where images appear mirrored in OSV when using certain Android phones, https://github.com/openstreetview/android/issues/3