771057 - about: should be locked for horizontal scrolling

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: General, defect)

Description

[Adrian Tamas (:AdrianT)]

Firefox 14 beta 11 build 1
Device: Google Nexus(Android 4.0.2), HTC Desire Z (Android 2.3.3), HTC Desire(Android 2.2.2)

Steps to reproduce:
1. Open Firefox and open "about:".
2. Scroll horizontally.
3. Do the same for about:home, about:addons, about:rights or any other about page or mobile page.

Expected results:
Just like for every about page/mobile page about: is locked for horizontal scrolling.

Actual results:
The "about:" page can be scrolled horizontally even if it is just overscroll as the page width is the same as the viewport.

Comment 1

[Aaron Train [:aaronmt]]

It looks like user-scalable is ignored

http://mxr.mozilla.org/mozilla-central/source/mobile/android/chrome/content/about.xhtml#18

Does it make a difference if that value is 0, akin to the values in the other other chrome/content pages?

Comment 2

[Matt Brubeck (:mbrubeck)]

(In reply to Aaron Train [:aaronmt] from comment #1)
> It looks like user-scalable is ignored

I can't reproduce this.  "about:" is not scalable in Nighty for me.  And if this is the case, it's probably a separate bug.

(In reply to adrian tamas from comment #0)
> The "about:" page can be scrolled horizontally even if it is just overscroll
> as the page width is the same as the viewport.

We prevent horizontal scrolling if the page is *exactly* the same width as the viewport.  There's probably a rounding error with the "initial-scale=0.6667" that we use to scale down the content (to make the pixel ratio 1:1 HDPI displays).  We should find a better way to make this page adapt to higher densities.

Comment 3

[BMO Automation]

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.