[Affected versions]: Firefox 64.0a1 (BuildId:20180919220108) Firefox 63.0b7 (BuildId:20180917143811) Firefox 62.0 (BuildId:20180830143136) [Unaffected versions]: Firefox 60.2.0esr (BuildId:20180903060751) [Affected platforms]: Windows 10 64bit. Windows 10 32bit. Ubuntu 16.04 64bit. macOS 10.13.6 [Preconditions] 1. Launch Firefox. 2. Install a language pack xpi. 3. Create the intl.locale.requested pref and have it set with what locale you have installed. 4. Restart Firefox. [Steps to reproduce]: 1. Access the profile path and delete the xpi from the extensions folder (While Firefox is open). DON'T restart Firefox. 2. Access the about:addons page. 3. Remove the language pack (via the Remove button). 4. Click the "Undo" button. 5. Access any about page. [Expected result]: The about pages are displayed successfully. [Actual result]: The about pages become unusable. [Regression Range]: I will get back with a regression range asap. [Additional Notes] - For further information regarding this issue please observe the attached screencast.
I have encountered another scenario, which seems to be worse. On some locales (ex ff), while this issue is encountered, Firefox is not closeable. I managed to reproduce this scenario by disabling/enabling the xpi from about:addons (instead of remove/undo from steps 3 and 4) and then pressing the X button or trying to quit Firefox via the Hamburger menu.
Closing this as that's a pretty edgy edge case (the remove and undo remove part).
Status: NEW → RESOLVED
Last Resolved: 7 months ago
Resolution: --- → WONTFIX
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