Affected versions]: - Firefox 64 and above [Affected Platforms]: - All Windows - All Linux - All Mac [Prerequisites]: - Have the Firefox AR locale build installed. - Have a Firefox profile with the following prefs in the "about:config" page: - "browser.newtabpage.activity-stream.asrouterExperimentEnabled" with "true" value; [Steps to reproduce]: 1. Open the browser with the profile from prerequisites. 2. Navigate to "about:newtab#asrouter" page. 3. Scroll down to the "NEWSLETTER_TEST_1" section and click the "Show" button. 4. Click the "Continue" button and observe the position of the "Dismiss" button. [Expected result]: - The "Dismiss" button is displayed in the left part of the snippet. [Actual result]: - The "Dismiss" button is displayed in the right part of the snippet. [Additional Notes]: - Attached a screen recording of the issue.

It sounds like this is fixed as of latest nightly. Can you confirm?

Fixed in https://github.com/mozilla/activity-stream/commit/afc948a958ef90094e8b6b8d28c7ddef1a8faeca

I have verified that this issue is no longer reproducible with the latest Firefox Nightly AR locale build (65.0a1 Build ID - 20181126100057) installed, on Windows 10 x64, Arch Linux and Mac 10.13.3. Now, the "Dismiss" button is displayed in the left part of a snippet.

Is this something we should consider uplifting to Beta before next week's RC?

Yes but this fix will be included as part of other Activity Stream exports so no tracking needed on this bug. Thanks.

Did this end up on 64, and if so, under which bug was it uplifted?

This landed as part of bug 1509565

Yes, for 65. I was asking about 64 (per comment 4).

Sorry here is the correct bug https://bugzilla.mozilla.org/show_bug.cgi?id=1500563#c9

Thanks for the confirmation.