Steps to recreate:

  1. File->New
  2. Set drawing mode to Pool
  3. rclick pool #0 in the combo lists
  4. click 'Edit Pool' in the context menu
  5. Set a weight to 65535
  6. Click 'Ok'
  7. Make sure pool preview below combo lists is set to 'Weighted'
  8. Observe only 68 pools (4 rows; 17 columns) are previewed


The fact that there is no scrollbar in the combo pool preview panel creates the impression that there are only 68 pools.