AnalyticalTable: Scroll position not maintained on growing table with groupBy and infiniteScrolling enabled

[fushizen]

Describe the bug

On using an Analytical Table with infiniteScrolling and groupBy enabled, on scroll to load more data, the scroll position jumps back to the top of the table

Isolated Example

https://stackblitz.com/edit/ui5wcr-at-bvsfmh?file=src%2FApp.tsx

Reproduction steps

1. Open the sandbox
2. Scroll to the end of the grouped table
3. Scroll position jumps to the top of the table on load of more data

Expected Behaviour

On scroll to load more data, scroll position should remain stationary on the page.

Screenshots or Videos

No response

UI5 Web Components for React Version

~1.29.11

UI5 Web Components Version

~1.24.10

Browser

Chrome, Edge, Firefox

Operating System

No response

Additional Context

No response

Relevant log output

No response

Organization

SAP

Declaration

• I’m not disclosing any internal or sensitive information.

[Lukas742]

Hi @fushizen

this behavior occurs because of two reasons:

1. The table is programmatically expanding all rows, when the data is fetched, this internal table state is reset per default and that's why the table is scrolling to the top. To prevent this you can use autoResetExpanded: false.
2. Different to "normal" tables, a grouped table does add new rows not necessarily at the end of the previous rows and therefore even with autoResetExpanded: false the scroll position can be off. Unfortunately, this is one of the reasons we don't recommend using grouping in combination with infinite scrolling. Some other limitations can be found in this PR, where we, i.a., outline this limitation more prominently.

StackBlitz example

When loading new data, you can try updating the scroll position yourself, by leveraging the scrollTo or scrollToItem method. (docs)

As there is unfortunately no design concept for this behavior and grouping was even deprecated for the SAPUI5 table, I'm going to close this issue now. If you have additional questions or feedback, please feel free to still post them here, as we also monitor closed issues.