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cursor location reported to javascript doesn't update when the page is scrolled.
Reported by
william....@noaa.gov,
Nov 28 2017
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 Steps to reproduce the problem: 1. go to https://rucsoundings.noaa.gov/ 2. click 'interactive plot'. (If no data shows on the plot, click 'load soundings' and then check 'latest' and click load.) 3. scroll the plot slightly. Note that the cursor arrow does not match the print-out that is supposed to be near and slightly above the cursor. What is the expected behavior? As you move the cursor over the plot, some text follows the cursor -- near and slightly above the cursor. When you click, a purple line runs from the (alleged) cursor location toward the upper left of the plot. What went wrong? When you scroll the plot slightly, the text appears way below the cursor. The javascript is evidently getting a different cursor position report than that shown by the cursor arrow. It looks like the cursor location to the java script isn't updated when scrolling of the whole page occurs. Did this work before? Yes previous to October 25, 2017 Chrome version: 62.0.3202.94 (Official Build) (64-bit) (cohort: Stable) Channel: stable OS Version: 6.1 (Windows 7, Windows Server 2008 R2) Flash Version: Shockwave Flash 27.0 r0 Left side of attached image shows correct behavior; right side shows that when the page is scrolled, the arrow and the text are no longer properly aligned.
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Nov 29 2017
This page is adding a.ownerDocument.body.scrollTop but really should be using a.ownerDocument.scrollingElement.scrollTop but not sure why it fails in Chrome and not Firefox as well.
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Nov 29 2017
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Nov 30 2017
Able to reproduce the issue on Win-7 and Win-10 using chrome reported version #62.0.3202.94 and latest canary #64.0.3280.0. But the issue is very inconsistent in nature as the good build doesn't remain consistently good and it shows bad behaviour sometimes. Hence, it won't yield correct bisect result. william.r.moninger@ - Could you please provide any other consistent repro to test the issue from TE-end. This will help us in triaging the issue further. Thanks...!!
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Nov 30 2017
Appears this site is using GWT. GWT needs to be updated; see https://github.com/gwtproject/gwt/issues/9542 |
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Comment 1 by william....@noaa.gov
, Nov 28 2017