(This can appear similar to T173642 but is distinct)
The wlm-fr UploadCampaign was rigged to autoAdd the category "Images from Wiki Loves Monuments 2017 in France − early" ; this was changed on August 31st to autoAdd " "Images from Wiki Loves Monuments 2017 in France to check" − see Diff/257024815.
However it has been reported that the Wizard sometimes sends uploads to the old category. See eg this file uploaded on September 4. According to one of the organisers, this happens ~20 times a day.