Magento issue tracker sent me here, because they think its not a bug. so...
- M2 v2.2.1
- Mysql 5.7
- PHP 7
Steps to reproduce
Updated product stock and price using this code: https://pastebin.com/eytSENau
Cleared cache, reindexed
Thumbnails missing in product listing (category page) and in admin area too. Images on product_view page are visible and correct, images in product edit page in admin are also visible and correct.
Tried to re-size images from command line, reindex, refresh cache.
Still not visible
Images should be generated / loaded / recognized
Thumbnails on product listings are placeholders.
Color swatches and other images works, just the thumbnails not on product listings.
Any idea what can be the issue? It worked until i did not updated the products form code. Thank you