Created attachment 8726587 [details] Firefox_WebGL_.Image.png [Affected versions]: -Latest Developer Edition 46.0a2 -Released 44.0.2 -Latest Nightly 47.0a1 -(Only tested on above versions - could be on other versions too) [Affected platforms]: - Win 7 x64 - Win 10 x64 -(Only tested on above versions - could be on other platforms too) [Steps to reproduce]: 1. Visit https://dl.dropboxusercontent.com/u/6983010/wserv/gexp_pulpo/index.html 2. On the WebGL animation, Right Click -> Save Image AS and save the image on the system 3. View the saved image Note: issue can also be observed through Right Click -> View Image [Expected result]: - Image should be saved as the snapshot of the animation when the image was saved [Actual result]: - Image saved from WebGL animation website is blank (please see the attached image from Firefox) [Additional notes]: - Chrome Browser saves the image correctly (please see the attached image from Chrome) - Browser Console in Firefox displays following error after the image is saved unsafe CPOW usage contentAreaUtils.js:404:0 unsafe CPOW usage PrivateBrowsingUtils.jsm:49:4 unsafe CPOW usage PrivateBrowsingUtils.jsm:49:11 unsafe CPOW usage PrivateBrowsingUtils.jsm:33:11 [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIAnnotationService.setPageAnnotation]" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: resource://app/modules/DownloadsCommon.jsm :: onDownloadChanged :: line 737" data: no] DownloadsCommon.jsm:743:0
Were all versions E10S enabled? If so, it'd be good to know if the problem also happens without E10S.
This is to confirm that issue is not specific to E10. Problem can be duplicated with both E10 enabled and disabled.
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