1219553 - Items not re-rendered sometimes if you scroll fast enough

Status: NEW

(DevTools :: Memory, defect, P3)

Description

[Jordan Santell [:jsantell] [@jsantell]]

It's not janky, but the rows coming into view, due to the virtual viewport, are not rendered fast enough, resulting in white space flashing.

Nick thinks adding more rows on either end will fix this (right now only one extra row is rendered on each end)

Comment 1

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

(In reply to Jordan Santell [:jsantell] [@jsantell] from comment #0)
> Nick thinks adding more rows on either end will fix this (right now only one
> extra row is rendered on each end)

Adding more rows just offscreen doesn't help.

FWIW, most time here is spent in React.

Comment 2

[Jordan Santell [:jsantell] [@jsantell]]

When scrolling fast, when getting the "empty space" rendering, if going fast enough, often enough the space stays "empty" and does not render any rows until scrolling fast again.

Comment 3

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

(In reply to Jordan Santell [:jsantell] [@jsantell] from comment #2)
> When scrolling fast, when getting the "empty space" rendering, if going fast
> enough, often enough the space stays "empty" and does not render any rows
> until scrolling fast again.

Evolving bug for this issue.