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Issue metadata

Status: Assigned
Owner:
Last visit > 30 days ago
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug



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Lines and text characters not aligned.

Reported by ryan.b...@gmail.com, Oct 18 2017

Issue description

UserAgent: Mozilla/5.0 (X11; CrOS x86_64 9765.81.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.120 Safari/537.36
Platform: 	9765.81.0 (Official Build) stable-channel gnawty

Example URL:

Steps to reproduce the problem:
1. Load webpage - has occurred on Google search results and Homeadvisor.com
2. Scroll down on given webpage
3. Within webpage contents, text characters partly shifted within the character, or form line. Continue to scroll and it corrects.

What is the expected behavior?
That text or elements are not broken. 

What went wrong?
Webpage elements not displaying correctly. 

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 61.0.3163.120  Channel: n/a
OS Version: 9765.81.0
Flash Version: Shockwave Flash 27.0 r0

The error is sporatic, and can't reproduce it.
 

Comment 1 by ryan.b...@gmail.com, Oct 19 2017

IMG_3545 (2).JPG
196 KB View Download
Components: -Blink Blink>Paint
Thanks for filing the bug, ryan.bing@gmail.com

Over for triage to Paint team. This might be a raster thing, not sure.
Components: -Blink>Paint Internals>Compositing
Labels: Needs-Feedback
NextAction: 2017-11-06
If anything this seems like a misaligned compositor tile issue.

Could you please go the DevTools, enable the "Rendering" tab under the three dot menu and "More Tools".  Then enable "Layer Borders". If you could grab a screen shot of the error with that enabled it would be great. Just letting us know if the misalignment is at one of the layer boundaries would be very helpful.

Comment 4 by ryan.b...@gmail.com, Oct 25 2017

Update: Saw the error again while on reddit.com and cnn.com this morning. Activated Dev Mode to enable layers. See attachments. The text was offset down the entire page. Corrected when I scrolled down. Occurred again, so took screenshot, but corrected itself when I opened the screenshot.pgn, both in the capture and in the browser. Scrolled again and took photos on iPhone. 

While not interacting with the browser or computer at all, the <body> tag lit up for a moment in the Dev Mode elements display, then the text corrected itself.
IMG_3598.JPG
3.5 MB View Download
FullSizeRender.jpg
3.5 MB View Download
IMG_3599.JPG
4.5 MB View Download
IMG_3597.JPG
4.2 MB View Download
Project Member

Comment 5 by sheriffbot@chromium.org, Oct 25 2017

Cc: schenney@chromium.org
Labels: -Needs-Feedback
Thank you for providing more feedback. Adding requester "schenney@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Components: -Internals>Compositing Internals>GPU
Thanks very much for the extra information. Not tile related, so not compositing. That suggests GPU issues.

Comment 7 by danakj@chromium.org, Oct 27 2017

Owner: marc...@chromium.org
Status: Assigned (was: Unconfirmed)
Yeah the line being split in #4 which is the tile boundary is a single gl draw, so being cut like that seems like a problem in the driver or hardware.

=> marcheu for thoughts
The NextAction date has arrived: 2017-11-06
NextAction: ----

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