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[Bug] List with CellMeasurer not scrolling properly

See original GitHub issue

Description: When rendering a List with CellMeassure and scrollToIndex is set on the last index of the list. It gets “freezed” at that position, so it can’t be scrolled up.

Reproducible here: Plunker

Affected version: v9.12.0

Issue Analytics

State:
Created 6 years ago
Reactions:3
Comments:6 (3 by maintainers)

Top GitHub Comments

1reaction

rickhanloniicommented, Nov 27, 2017

I got a little further on this and I think I understand the problem

What’s happening is that the CellMeasurer is coming to new cells and calling Grid.invalidateCellSizeAfterRender. That’s eventually getting to this line:

this._recomputeScrollTopFlag = scrollToRow >= 0 && rowIndex <= scrollToRow;

Which will reset the scrollTop on the next cDU only when scrolling up. If you reverse the <= to >= then the same problem happens when scrolling down

0reactions

DavidCarycommented, Sep 19, 2019

I should have written that this appears to have been partially fixed as of version 9.20.1. Can anyone share an example where the problem still exists in the current version?