Canvas - Known Issue - Students Can't View Embedded Images
Users are reporting sporadic issues viewing image files that are stored in Canvas and embedded in pages or assignments.
There are likely multiple reasons why students and other Canvas users may experience problems viewing course images.
This issue has been reported to sporadically affect:
Chrome users running outdated versions of the browser
Users in courses with large embedded images
There is also a replicable issue in which students are unable to view particular course images that are viewable for instructors. At this time, we have not determined what types of images are susceptible to this issue.
Additionally, Safari 13.1 contains an update that may cause issues with downloading files and displaying images in Canvas.
As of July 16, 2020, this is an ongoing and present issue. Instructure is aware of the issue.