Launch the image editor

    1 - Click on the "Edit" button below the image
    2 - Check that the image editor interface shows up, with the "Actions" toolbar and the "eZ Image Editor" floating window
    3 - Click on the "Rotation" toolbar button
    4 - Check that the "Rotation" interface shows up in the right column
    5 - Drag & Drop the large blue dot (class: ui-circular-slider ui-draggable) and check that the angle in the center text box changes
    6 - Stop at any rotation value different from 0
    7 - Click on "OK"

Repeat steps 5 to 7, 6 times or more. You will see the image many times smaller than the original.