SUMMARY On level 13 in the ‘Assemble the puzzle’ activity, five sublevels are listed (there is a ‘1/5’) label in the bottom right corner. When you finish the puzzle, you are taken to sublevel 2/5, which is empty. STEPS TO REPRODUCE 1. Start the ‘Assemble the puzzle’ activity. 2. Press the ‘Next level’ button until you reach level 13 (‘Michelangelo: Pietà (1499)’) 3. Finish the puzzle OBSERVED RESULT You are taken to sublevel 2/5, which is completely empty. EXPECTED RESULT You should be taken to level 14.
Thanks for the report. This is now fixed (and for level 18 too which had the same issue).