Tiles of webpage not aligning vertically
Reported by
darren.l...@gmail.com,
Oct 14 2017
|
||||||||||
Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 Steps to reproduce the problem: 1. Go to article on affected website (lifehacker.com; e.g., https://gear.lifehacker.com/a-ridiculous-number-of-ways-to-make-good-coffee-while-t-1819365133) 2. Scroll down 3. View broken text What is the expected behavior? Webpage should render without vertical offsets between tiles. What went wrong? There's some sort of vertical "tear" right in the middle of text. It will go away and come back while scrolling. Sometimes there is a short delay after stopping scrolling, and then it will appear. Did this work before? N/A Chrome version: 61.0.3163.100 Channel: stable OS Version: OS X 10.12.6 Flash Version:
,
Oct 16 2017
Unable to reproduce the issue on the reported chrome version stable 61.0.3163.100 and on the latest canary 63.0.3239.0 on Mac 10.12.6 with the below mentioned steps. 1. Navigated to https://gear.lifehacker.com/a-ridiculous-number-of-ways-to-make-good-coffee-while-t-1819365133) 2.Scrolled down 3. Found the text in a normal way. Attaching the screen shot of the same. @Reporter: Could you please check the same on a new profile or in incognito mode. Any additional information from your end will be highly helpful for further triaging the issue. Thanks!
,
Oct 16 2017
Tried in incognito mode, and was able to reproduce. For what it's worth, it appears to be a race condition, because it shows up sometimes but not always. I had to scroll down for a bit and watch carefully in order to catch the bug. Sometimes it occurs slightly after stopping scroll, like 50-X00ms. So, you scroll, it's okay, and then after a slight delay the tiles move apart by a pixel.
,
Oct 16 2017
Thank you for providing more feedback. Adding requester "vamshi.kommuri@techmahindra.com" to the cc list and removing "Needs-Feedback" label. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
,
Oct 16 2017
,
Oct 16 2017
Sorry, that thing on the top is an "aside" element, and the bottom is an iframe.
,
Oct 17 2017
darren.lewis@ Thanks for the feedback. Tested this issue again on Mac OS 10.12.6 and Windows 7 using the latest Canary 64.0.3241.0 and Stable 61.0.3163.100 and unable to reproduce the issue with the steps mentioned in comment #3. Issue not observed in incognito mode as well. Request you to please retry the issue on a new chrome profile without any flags/extensions and update the thread with the observations. Thanks..
,
Oct 17 2017
Thank you for providing more feedback. Adding requester "susanjuniab@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
,
Oct 17 2017
Looks like a compositor issue, over to compositing team.
,
Oct 18 2017
,
Oct 20 2017
+ericrk@ Any thoughts on what the problem might be?
,
Oct 27 2017
darren.lewis@, if possible, can you open dev-tools (cmd+option+i on mac), then select "more tools > rendering" from the overflow menu at the top (next to the X). This will open a rendering panel at the bottom of the screen. Please click/enable "Layer Borders" and attach a screenshot of the issue with "layer borders" enabled. Thanks for the help! fsamuel@ - Interestingly, this is with SW compositing (GPU is disabled). I'll see if I can repro.
,
Nov 1 2017
Screenshots with Layer Borders on. Just want to point out that this seems to be some sort of race condition with the tile rendering. It's difficult to capture and reproduce, and usually the tile misalignment will resolve on scroll (and sometimes mousedown).
,
Feb 13 2018
I don't have the bandwidth to investigate this right now. ccameron@, can you take this bug? The issues are not tile aligned, so this could be an issue with IOSurface texture upload issue? Have you seen anything like this before?
,
Feb 21 2018
When we turn on tiles, we disable all IOSurface overlay paths -- what we're seeing there is what is written to the GL texture. Do you have hardware acceleration disabled? Could you go to about:gpu, print the result as a PDF, and attach it? |
||||||||||
►
Sign in to add a comment |
||||||||||
Comment 1 by nyerramilli@chromium.org
, Oct 16 2017