873805 - Overlay scroll bar size should not be affected by page zoom (Mac OS X)

Status: RESOLVED DUPLICATE of bug 868416

(Core :: XUL, defect)

Description

[ce]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:23.0) Gecko/20130518 Firefox/23.0 (Nightly/Aurora)
Build ID: 20130518004019

Steps to reproduce:

The most recent versions of Aurora have added native-looking overlay scroll bars to the Mac OS X version. These appear as expected when the page is at default zoom level, but if the zoom is increased, the scroll bars zoom in too.

Steps to reproduce:

1. Visit any scrollable page on Aurora for Mac.

2. Scroll up and down, noting the native-looking size/appearance of the overlay scroll bars.

3. Zoom the page in several times with ⌘+.

4. Scroll up and down, noting the now over-sized and (in some cases) glitchy-looking scroll bars.


Actual results:

Scroll bars increase size with page zoom.


Expected results:

Scroll bars should always stay the same size, independent of page zoom.

This is the behaviour of all native OS X applications which feature a zoom function (graphics editors, word processors, &c.), including Safari and Chrome.

Comment 1

[Tiziana Sellitto [:tiziana]]

I've used mozregression and find that 

Last good nightly: 2013-05-02
First bad nightly: 2013-05-03

Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=70e0955ccc87&tochange=b35170667a2f

Comment 2

[ce]

Oh, in following some of the links from that page, it looks like this is actually a duplicate of bug # 868416.