I have issues with the posting of images using the gallery shortcode.
After uploading the images, the thumbnails get displayed correctly in the post (as selected in the interface during upload with 150x150).
My problem is that after clicking the images in the post, the lightbox pops us (as intended) BUT the image size within that lightbox is only medium (aka max 300px on the longer side).
I want the lightbox to display the images in their full size (which is bigger than medium).
How can I switch the display from medium to full in the lightbox?
The gallery shortcode itself works fine, including thumbnails, caption, 'next' etc. I went through the setting and couldn't find any configuration which would limited the display to medium.
Anyone any ideas?