User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0 Build ID: 20180206200532 Steps to reproduce: Open https://ttlc.intuit.com/ or any of the linked pages under "Browse Topics" on that page. The problem does not occur with pages that are lined under "Top FAQs" on that page. Actual results: A script causes Firefox to scroll to the bottom of the page. Same if you follow a link and use Back to return to the page. Same behavior in release and Nightly. Does not occur in other browsers (Chrome/IE11). This makes the pages very frustrating to browse. Expected results: Firefox should display the page at the top. Per mozregression: 2018-02-08T17:59:33: DEBUG : Using url: https://hg.mozilla.org/integration/autoland/json-pushes?changeset=22e1a32de5b88f1f56a156aefa95614b5cda204c&full=1 2018-02-08T17:59:33: DEBUG : Found commit message: Bug 1318312 part.3 Selection should move focus at every selection change when it's called by JS r=smaug Selection may be changed by methods of Selection or methods of Range retrieved by Selection.getRangeAt(). Selection::NotifySelectionListeners() is called after every selection change of each of them, so, this method must be a good point to move focus. If new common ancestor of all ranges is editable and in an editing host, we should move focus to it. Otherwise, if an editing host has focus but new common ancestor is not editable, we should move focus from the editing host. For consistency with the other browsers, this patch doesn't move focus to other focusable element. MozReview-Commit-ID: 6sNsuzwqECX 2018-02-08T17:59:33: INFO : The bisection is done. This seems similar to but not fixed by bug 1377752 (Page is unexpectedly scrolled to the bottom)

If somebody would create a minimized testcase, that'd be really helpful.

[Triage 2018/03/23 - P3]

Mass bug change to replace various 'parity' whiteboard flags with the new canonical keywords. (See bug 1443764 comment 13.)

I have used the following STR to retest the issue in question: 1. Launch browser. 2. Load: https://ttlc.intuit.com/ 3. Click on any of the cards displayed in the "Browse Topics" section. Actual: The user is redirected to the page, but auto-scrolled to the bottom of the page. Expected: The user is redirected to the correct page and no auto-scroll is applied. The page is scrolled to the top (default).

Pushed by masayuki@d-toybox.com: https://hg.mozilla.org/integration/autoland/rev/f5c2da8845b4 Make Selection::NotifySelectionListeners() not scroll when it moves focus r=smaug