palantir/blueprint

Table Whites Out With Mouse Scroll Greater Than 3 Rows

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#4,780 opened on Jun 24, 2021

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 (5 comments) (1 reaction) (0 assignees)TypeScript (2,167 forks)batch import
P2Package: tableType: bughelp wanted

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Description

Environment

Try out on the blueprint table feature docs page..

Code Sandbox

https://blueprintjs.com/docs/#table/features

Steps to reproduce

Set mouse scroll (windows) to greater than 3 lines. Scroll the table.

Actual behavior

When scrolling up the first two rows sometimes don't get displayed/updated.

grafik

Expected behavior

Every row always gets displayed.

Possible solution

Only seen that with blueprint table so I assume the problem is located there.

Contributor guide

Research direction
Investigate the table's scroll event handler when deltaY > 3 rows. Focus on row virtualization and how the table updates visible rows. Check if the issue is caused by missed render updates when scroll amount exceeds a threshold.
Tech stack
typescriptreact
Domain
frontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
ReactTypeScriptBrowser scrolling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70