Virtual scrolling does not extend for expanded groups

[lukefanning]

Hi, I am using VirtualTable, GroupingState and IntegratedGrouping and I have noticed that when expanding groups the vertical scrollbar does not extend leading to rows overflowing and being hidden. It seems as though expanding and retracting groups does not cause a recalculation of the virtual table height.

• [x] I have searched this repository's issues and believe that this is not a duplicate.

I'm using ...

• [x] React Grid
• [ ] React Chart
• [ ] React Scheduler

Current Behaviour

VirtualTable scrollbar does not increase as groups are expanded.

Expected Behaviour

Scrollbar length would increase as more groups are expanded allowing you to view all grouped rows.

Steps to Reproduce (for Bugs)

Create a VirtualTable and add grouping. Group data by columns and then expand those columns.

Environment

• devextreme-reactive: 1.10.0
• react: 16.6.3
• browser: Chrome 71.0.3578.98
• bootstrap: 4.1.3
• react-bootstrap: none
• material-ui: 1.10.0

[lukefanning]

I reverted back to Table but the problem is the same.

[PhobosX]

Same here - Grouping and Virtual table dont work as intended - rows are disappearing when group is expanded.

in version 1.10.1 problem is still available

reproduction: https://devexpress.github.io/devextreme-reactive/react/grid/demos/featured/virtual-scrolling/

try open all groups in your demo - are all rows still visible? nope

[ushkal]

Hi, I couldn't reproduce the problem using both a sample project and our demo, see the attached screencast. @ssg-luke could you please provide us with a sample project where the issue is reproduced?

[lukefanning]

Hi @ushkal I managed to reproduce it in a sandbox. It seems to be caused by using PagingState & IntegratedPaging with grouping. You check it out here

[lukefanning]

Ok fixed ^_^. Paging must come before grouping. Then it works perfectly! Thanks for taking a look

[lukefanning]

@ushkal Is it a bug tho that it only works if it grouping appears after paging? I can definitely see a case for wanting grouping across all data rather than just the current page with working scrolling... Should i reopen? 😅

[ushkal]

Hi @ssg-luke ,   At present, the DevExtreme Reactive Grid does not support a combination of paging and a virtual table. We'll notify you once it is implemented.   Sorry for the late response.