I just tried the puzzle hint functionality, here is what happened:
1. Open the puzzle, I was in rated mode
2. I click on hint, see the piece I need to move and make the correct first move
3. I now notice the mode is switched to Not Rated
4. I click view solution (same puzzle, but for the second move), and notice I lose rating
Losing rating in unrated mode seems like a bug, possibly the hint button does not properly switch rated mode off.
1. Open the puzzle, I was in rated mode
2. I click on hint, see the piece I need to move and make the correct first move
3. I now notice the mode is switched to Not Rated
4. I click view solution (same puzzle, but for the second move), and notice I lose rating
Losing rating in unrated mode seems like a bug, possibly the hint button does not properly switch rated mode off.