This test requires the ATTO editor to be default in Site administration>Plugins>Text editors>Manage editors.
1) As a user, access a forum and click to add a new discussion. Give it a title.
2) Click on the Insert image icon.
3) Browse for and upload an image and insert it with 'This image is decorative only'.
4) Double-click the image in the ATTO editor.
6) Verify that the image properties window displays and add an image description.
7) Save and post to the forum.
8) Click to edit your post.
9) Double-click the image again.
10) Verify that the image properties window displays, and change it back to 'decorative only'.
11) Save your edited post.