Steps to recreate:
- File->New
- Set drawing mode to Pool
- rclick pool #0 in the combo lists
- click 'Edit Pool' in the context menu
- Set a weight to 65535
- Click 'Ok'
- Make sure pool preview below combo lists is set to 'Weighted'
- 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.