The current configuration inside public/js/editor.js rewrites the path of images wider than 600px to /admin/asset/get-image-thumbnail?id=<asset-id>&width=600&aspectratio=true. This is written to the HTML which causes the image to only be viewable on the website if you are logged in as an backend user.
This issue is only present after the backend user did a reload after the image upload. Up until then the path seems to be used directly.
Pimcore:

Browser with logged in backend user:

Browser without logged in backend user:

I do not know if there is a need for the 600px width limit other than having a workable width for large images.
The current configuration inside
public/js/editor.jsrewrites the path of images wider than 600px to/admin/asset/get-image-thumbnail?id=<asset-id>&width=600&aspectratio=true. This is written to the HTML which causes the image to only be viewable on the website if you are logged in as an backend user.This issue is only present after the backend user did a reload after the image upload. Up until then the path seems to be used directly.
Pimcore:

Browser with logged in backend user:

Browser without logged in backend user:

I do not know if there is a need for the 600px width limit other than having a workable width for large images.