I just want to be able to control the size (or mainly the width, keeping aspect ratio) of an image in a preview on the CMS Content.php page.
I use 2 rows & each row is about 450px wide so linked images that are wider break out. (however changes made to "image_thumbnail_max" works great for uploaded/attached images, but only takes care of attachments, not linked images)
Maybe we just can't control linked images, & that may be the problem.
Sorry if it didn't make sense.