This issue appears to have been introduced recently (either 8.2.0 or 8.2.1) but the drupalimage plugin is implementing a piece of the allowedContent setting previously turned on and off by the "Limit allowed HTML tags and correct faulty HTML filter" in the text formats and editors dialog window. All of our users are trusted and trained employees, and so we give them access to the Full HTML text format, with that filter turned off. However, we discovered that when adding attributes to images (such as style tags) other than data, src, alt, width, and height in the src code, ckeditor immediately removes them, behavior that did not exist previously.
↧