http://code.google.com/p/zkspreadsheet/issues/detail?id=245

Reported by project member ashish.dasnurkar, Dec 16, 2010

1.deploy and run ZK Spreadsheet Live
2.freeze row 5 by clicking View>>Freeze Row>>Freeze Row 5 (section of chart is part of frozen rows)

Expected:If chart/section of chart is part frozen row(s) it is displayed while rest can be scrolled up
Instead:Chart is cut properly but section of chart that is part of frozen rows disappears. Also if Chart completely falls in the frozen rows it disappears.