We have a public facing internet site using SharePoint 2013. We are using image renditions to display different sized images for the page and content rollups and find this a great feature.
The problem is that after changing the cropped area of the image, the rendition does not update with the newly selected area. Even after waiting for a week the old cropped image is still display.
Looking at the blob cache files, SharePoint is still caching the old version of the cropped image and never seems to update automatically.
Any help appreciated.