Been meaning to report this. While scrubbing has been improved so that it's easier to tell where in the video you are as you scrub, it's not smooth, frame-by-frame action. When you slide the cursor with other video players, including the native player in DD, you can see all the frames flying by. This makes scrubbing work like a shuttle jog, making it easier to go back and forth to find the exact frame you want. If you can implement this, it would help compensate for the lack of backward frame advance.