1273607 - Dismissing of NotificationBox scrolls to top of page

Status: NEW

Description

[Dave Justice [:JSON_voorhees / :meandave]]

When we show a NotificationBox (heartbeat or Test Pilot or w/e else) and the notification box is dismissed, the box disappears, but then the web page is scrolled to the top.

Linux 4.2.0-36-generic
Firefox Dev Edition version 48.0a2
Ubuntu 15.10

Steps to reproduce:
1) Navigate to a longish page and scroll down a bit (https://en.wikipedia.org/wiki/Anarchism#Spanish_Revolution)
2) Open up browser toolbox console and execute:
`bar = gBrowser.getNotificationBox(); bar.appendNotification('label', 'value', 'invalid.png', bar.PRIORITY_INFO_LOW, [])`
3) Dismiss notification with the 'x' icon.
4) if on linux, notification will disappear and page will scroll to top.

Comment 1

[Andrew Overholt [:overholt]]

This also happens on Windows. Do you know if this is a regression?

Dolske, any thoughts here (sorry, blame)?

Comment 2

[Justin Dolske [:Dolske]]

I can't reproduce this on OS X or Windows 10. Is this in a new profile? Does E10S / APZ have any effect?

The relevant code is http://searchfox.org/mozilla-central/source/toolkit/content/widgets/notification.xml

I'm not sure how this would be happening -- the notification doesn't touch web content. The only vaguely related thing is that the slide in/out animation affects the size of the <browser>, so if there's some bizarre and indirect scrolling/layout bug there...

A regression range would be helpful, especially if this is difficult for others to reproduce.