Change to rotation about the center of the rectangle
Change to rotation about the center of the rectangle

To make the drag handels work well they all scale the rectangle with
respect to the center (the center of the rectangle will not move during
resize).

zooniverse/Panoptes-Front-End,amyrebecca/Panoptes-Front-End,amyrebecca/Panoptes-Front-End,amyrebecca/Panoptes-Front-End