User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0 Build ID: 20161213204721 Steps to reproduce: Visit this page: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/fillText Actual results: The demo in the page is not working. Console shows: "TypeError: ERROR.captureStackTrace is not a function" Expected results: Tha page should not throw a TypeError.
WFM with FF50.1.0 on Win 7. Could you use the tool mozregression (with python 2.7) to narrow down a regression range, please. http://mozilla.github.io/mozregression/ Run "mozregressionn --good=49" then copy here the final pushlog from mozilla-inbound.
WFM in Fx51.0b7 (64-bit) on Win10. Reporter, what is the source of the error?
looks like this is an issue caused by Privacy Badger extension or its variant.
Status: UNCONFIRMED → NEW
Component: Untriaged → Extension Compatibility
Ever confirmed: true
Summary: CanvasRenderingContext2D.fillText() throws a TypeError → Privacy Badger extension and maybe its variant causes TypeError: ERROR.captureStackTrace is not a function
this happens with version 2016.12.8.1, but doesn't happen with version 1.9.2. https://addons.mozilla.org/ja/firefox/addon/privacy-badger17/versions/
so looks like it's tracked in https://github.com/EFForg/privacybadger/pull/1053
Confirmed, disabling the extension solves the error. I'm sorry, I should have checked without extensions before reporting. This issue should be closed, right? Thanks friends.
As it's already tracked on the Github repo of Privacy Badger, let's close this bug.
Status: NEW → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → WORKSFORME
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