>>> My Info: Win7_64, Nightly 46, 32bit, ID 20151217030207 STR: 1. Enable hardware acceleration in Firefox, restart the browser 2. Open "pdf_file_1" below in PDFJS Result: There're black ellipses drawn over images on the 1st page and on the 9th page Expectations: There should be no black ellipses Note: I opened that .pdf file in local PDFJS (viewer.html) - it still exposes the issue, but only in Firefox, not in GoogleChrome with enabled HWA. So it looks like firefox bug. Some detailed info from PDFJS developers is required. Links: > pdf_file_1 https://dl.dropboxusercontent.com/s/9vc5qlydskiwu6g/16_The_impact_of_transport_policies_on_railroad_intermodal_freight_competitiveness__The_case_of_Belgium.pdf?dl=0 > screenshot https://dl.dropboxusercontent.com/s/tye9y9gl0ta4dop/screenshot%201%20-%20pdfjs%20draws%20a%20big%20black%20ellipses%20over%20pictures%20when%20HWA%20enabled.png?dl=0 > about:support https://dl.dropboxusercontent.com/s/wzj99pequngf7oz/Troubleshooting%20Information%202015.12.20%2002-10-12.xht?dl=0 > > Dropbox folder https://www.dropbox.com/sh/18iujohwvcthqcw/AACtQQ4ahL5AKU9NftUUmrbLa?dl=0
It's reproducible since at least firefox 28
Clearing CC-list to avoid bug spam I'll use this bug for a small test, because I can't do it anywhere else.