We have a site which is currently running on Magento 2.1.8 and are running into problems with image changling within the catalog. If we make a change to the base, small, thumbnail image for a product it does not seem to be reflected on the frontend. We have tried various admin functions to resolve but nothing seems to have an impact.
To recreate this we go to a product in admin and upload a new image. Click the image we just added and select the options for this to be Base, Small, Thumbnail, Swatch. Click save and on the frontend browse to the catalog and see that the image for the product is unchanged.
Clear cache from admin has no impact, running a cache clear from CLI does not have an impact. Even running a rebuild of the image cache does not seem to resolve the issue. We have tried restarting Apache, Varnish and disabling CDN and are out of things to try.
Is this a known issue in 2.1.8 or are there any other ideas on what might be holding that now out of date reference view of the product