Marquee tag breaks when opening devtools
Reported by
messagec...@gmail.com,
Nov 24 2016
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2928.0 Safari/537.36 Steps to reproduce the problem: 1. Navigate to http://polynarrate.com 2. Inspect page in Chrome Dev tools. Click on a few elements in the DevTools element tag. You can most likely reproduce the following error. 3. 2/3 times the Marquee tag will stop displaying text and an error will appear in console. """ VM27 HTMLMarqueeElement.js:328 Uncaught TypeError: Cannot read property 'loopCount_' of undefined at Animation.animationFinished_ (VM27 HTMLMarqueeElement.js:328) animationFinished_ @ VM27 HTMLMarqueeElement.js:328 """ What is the expected behavior? Marquee tag is a native custom element. It should be resistant to nuclear apolcalypse. Not felled by devtools. What went wrong? Marquee tag got broken. Did this work before? N/A Does this work in other browsers? N/A Chrome version: 57.0.2928.0 Channel: n/a OS Version: 10.0 Flash Version: Shockwave Flash 24.0 r0
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Nov 24 2016
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Nov 24 2016
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Nov 24 2016
Using the per-revision bisect providing the bisect results, Good Build : 56.0.2919.0 (Revision :431801) Bad Build: 56.0.2920.0 (Revision :432057) You are probably looking for a change made after 431950 (known good), but no later than 431951 (first known bad). CHANGELOG URL: The script might not always return single CL as suspect as some perf builds might get missing due to failure. https://chromium.googlesource.com/chromium/src/+log/48c029113eb4338243d99dbc76f85896be8f3a22..7db18648678acf332a4cb7c91b831dd231e26d62 From the CL above, assigning the issue to the concern owner @mlippautz - Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner. Review-Url: https://codereview.chromium.org/2495173003 Note : Issue is seen in Linux and Windows OS Thanks!
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Nov 24 2016
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Nov 24 2016
Verified that it's related to wrapper tracing. We seem to loose an object somewhere along the tracing path that we did catch using object grouping.
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Nov 24 2016
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Dec 2 2016
Seems this issue got fixed on Windows 7 ,windows 10 & Linux Ubuntu -14-04 with latest Chrome Canary version-57.0.2938.0. Observation: Marquee tag is displayed properly without any breaks even after clicking elements in devtools element tags. Please find the attached screen cast for reference. @Reporter: Could you please check the same in latest Canary & update the thread accordingly. Thank you.
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Dec 2 2016
Cool.
Yep, I can also confirm that
I am unable to reproduce in Canary latest ( 57.0.2938 / master@{435817} )
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Dec 5 2016
Note that this is not fixed, we just reverted the flag. I need to have a closer look after stabilization.
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Dec 7 2016
We landed a couple of fixes before reenabling the feature which seems to have sealth-fixed the problem. I checked on Canary 57.0.2944.0, which actually has the feature enabled, that we don't see the error on the marquee element. Please re-open if you think this issue still exists. |
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Comment 1 by messagec...@gmail.com
, Nov 24 2016