I found a serious bug when using outline feature of OpenOffice Calc.
1 Group 3 rows
2 Collapse the group, summary row (row 3#) was collapsed too.
3 However, I can drag and redisplay summary row (row 3#)
4 When I collapse it again, summary row (row 3#) still be collapsed.
Outline of column has same bug. How could I choose OpenOffice?