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Issue 876745 link

Starred by 1 user
Status: WontFix
Owner: ----
Closed: Aug 29
Cc:
█ trchen@chromium.org
pdr@chromium.org
smcgruer@chromium.org
yigu@chromium.org
vmp...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 3
Type: Bug



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position:sticky - jump seen when scrolling with --disable-prefer-compositing-to-lcd-text

Project Member Reported by smcgruer@chromium.org, Aug 22 
Reproduction steps:

1. Open Chrome with --disable-prefer-compositing-to-lcd-text set
2. Navigate to http://output.jsbin.com/tilequd (or attached html)
3. Scroll the scroller down to the bottom, and then back up to the top.

When the sticky nears the top/bottom of the page, probably near where it reaches the edge of its containing block, it suddenly jumps. This shouldn't happen (it isnt at a sticking point). Force any of it onto the compositor and the problem goes away.
index.html
501 bytes View Download

Comment 1 by trchen@chromium.org, Aug 28

Cc: trchen@chromium.org
Components: Blink>Paint
Is the phenomenon very subtle? I run M69 on a low-res workstation, but I don't feel the sticky element being particularly jumpy. Both the scroller and sticky are not composited.

Comment 2 by smcgruer@chromium.org, Aug 29

Cc: pdr@chromium.org
Huh, this is strange. It was not subtle at all, but I can no longer reproduce on ToT. I'll try a quick bisect of recent canarys to see if I can get it to work...

cc pdr@ who originally noticed it when he was reviewing https://chromium-review.googlesource.com/c/chromium/src/+/1180071

Comment 3 by pdr@chromium.org, Aug 29

Status: WontFix (was: Available)
I'm not sure where the bug went :/ Lets call it fixed.
►

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