952613 - Unsetting the ui.useOverlayScrollbars preference has no effect

Status: NEW

(Core :: Widget: Cocoa, defect)

Description

[Mats Palmgren (inactive)]

Similar to bug 932814.

See bug 947688 comment 17 and the patch there.

SpecialPowers.clearUserPref("ui.useOverlayScrollbars");
removes the pref but that does not restore the default
scrollbar behavior (fade-away scrollbars on OSX).

Comment 1

[Mats Palmgren (inactive)]

Hmm, I wonder if other prefs in this list also have the same problem:
http://mxr.mozilla.org/mozilla-central/source/widget/xpwidgets/nsXPLookAndFeel.cpp#26

Comment 2

[Stephen A Pohl [:spohl]]

I wonder why the patches in bug 868498 don't work here...

Comment 3

[Stephen A Pohl [:spohl]]

Also see bug 868396, where we started respecting ui.useOverlayScrollbars by calling nsLookAndFeel::GetInt(nsLookAndFeel::eIntID_UseOverlayScrollbars) explicitly every time, rather than caching the pref.

Comment 4

[Mats Palmgren (inactive)]

It appears we have quite a few reftests that occasionally fails due to fade-away scrollbars
being slightly different in the test vs. the reference.