[Affected versions]: - Firefox 54.0a1 (2017-02-16) [Affected platforms]: - Windows 7 64-bit - Ubuntu 16.04 32-bit [Steps to reproduce]: 1.Launch Firefox with clean profile. 2.Create extensions.webextPermissionPrompts and set it to true. 3.Create xpinstall.signatures.dev-root and set it to true. 4.Change extensions.update.background.url to point to dev server and set the update interval (extensions.update.interval) to “1”. 5.Install the first version 1.4 of the following webextension: https://addons-dev.allizom.org/en-US/firefox/addon/permissionsall02-14-17-1-0/versions/ 6.Restart the browser [Expected results]: - The word “Update” is displayed for the update button when permission pop-up is prompted in the web page. [Actual results]: - The word “Add” is displayed for the update button when permission pop-up is prompted in the web page. [Regression range] Last good build: f505911eb333d5ae8c2bf5c44f7b85add6450b53 First bad build: 70debab476881121ddfe92fc60c80cfae0a63bc7 Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=f505911eb333d5ae8c2bf5c44f7b85add6450b53&tochange=70debab476881121ddfe92fc60c80cfae0a63bc7 [Additional notes]: - This issue reproduces constantly. - Here is a video of this issue https://www.screencast.com/t/i3raFZNPgzT and a screenshot https://www.screencast.com/t/irtKRstQaIuF I suspect that this issue was regressed by Bug 1336085.

I'm not sure what to do about testing here, this is about the contents of strings in the UI which we don't explicitly test anywhere else...

Comment on attachment 8838235 [details] Bug 1340135 Use the right strings for permission update notifications https://reviewboard.mozilla.org/r/113196/#review115088

Pushed by aswan@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/3519eae484c0 Use the right strings for permission update notifications r=rhelmer

This issue is verified as fixed on Firefox 54.0a1 (2017-02-24)under Wind 7 64-bit and Ubuntu 16.04 32-bit The word “Update” is displayed for the update button when permission pop-up is prompted in the web page. Here is a screenshot:https://www.screencast.com/t/4wxMwvIVsD1