1417652 - No option to overlay scrollbar

Status: RESOLVED DUPLICATE of bug 77790

(Firefox :: Untriaged, defect)

Description

[andrew]

Attachment: firefox_2017-11-15_21-04-44.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
Build ID: 20171112125346

Steps to reproduce:

Set
layout.testing.overlay-scrollbars.always-visible;true


Actual results:

Firefox uses native Windows scrollbar


Expected results:

Firefox uses Chrome-like overlayed scrollbar (i.e. #overlay-scrollbars)

Comment 1

[Kohei Yoshino [:kohei]]

IFAIK overlay scrollbars are only supported in macOS for now, and the preference is unrelated. Chrome-like scrollbar styling is non-standard, so it's not supported in Firefox. It's expected behaviour, not a bug at all.

The good news is there's a standardization effort underway, and Firefox may implement the spec in the future. That's Bug 77790.