It's more than one year I have changed my website from http to https. There is still pages that are not correctly served by drupal. On some pages there are still images that are served by http instead of https, example:
As this page/image is created live and the image belongs to panels module, I have no idea where to search for this problem, drupal? ctools? panels?
I use the last drupal version 7 with panels, ctools and zen theme.
All caches and views were cleared many times. Any help is welcome, thanks.