Issue while scrolling down in the grid with grouping

[manokondrangi]

While expanding one group when all groups are in collapsed state, I am getting lesser rows in the group than it actually contains. This seems happening bcz of virtual scrolling.

http://mleibman.github.io/SlickGrid/examples/example-grouping

Steps to reproduce:

1. choose 500k rows
2. Collapse all groups
3. Expand one group in bottom of grid view (current viewport)
4. Expand one group from top
5. Scroll down

You can see lesser rows in the group than it contains. And its working good if we scroll little more and scroll up back to the previous position.

[6pac]

There have been a number of grouping bugs identified and fixed in my repo, give it a try: https://github.com/6pac/SlickGrid You should be using that repo anyway, the MLeibman branch is getting very out of date now..

[manokondrangi]

Thank you @6pac ..