With the 3.20 seblod release we now can use the webp format since every new upload automatically generates a webp version. Of course we have to use the image typo plugin to use the WEBP (in the extension option of the typo plugin)
but on existing sites former contents (contents that have been created before the 3.20 release) don't have any webp image.
EVEN if you modify the upload image field so that the thumbnails are ALWAYS generated , they are NOT when you are browsing the pages if the _thumbX folders is not empty: The webp image is not generated since a JPG file already exists!
it seems there has always been an issue with the ALWAYS / ALWAYS IF DOESN'T EXIST : since both seem to behave the same way
How can we FORCE seblod to generate WEBP thumbnails for all these older posts please?