1690038 - Scrollbar is enabled and disabled based on a setting in macOS system preferences

Status: RESOLVED DUPLICATE of bug 1397996

(Core :: DOM: Security, defect, P2)

Description

[Tom Ritter [:tjr]]

I found https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/22632 which talks about the system preference to show the scrollbar always (reducing the viewport) or make it an overlay.

I think this setting is tied to this code which would make it easy to pin with RFP. I'd propose to pin it to 'overlay mode' which is the default AFAICT.

Comment 1

[Tom Ritter [:tjr]]

Attachment: Bug 1690038: If RFP is enabled, always use an overlap scrollbar

Comment 2

[Tom Ritter [:tjr]]

Okay, I fiddling with this for a moment and came up with a hacky patch. It actually looks like we may be able to enable an overlay scrollbar on all platforms via this mechanism, which might solve Bug 1397996 too?

I sent in a try run here so we can test the builds. https://treeherder.mozilla.org/#/jobs?repo=try&revision=c7ff702e57508ec6e9f7b53364c62f49f830c6df

Comment 3

[Beedell, Roke Julian Lockhart]

Is this issue only proposal for disablement of this feature if resistance against identification is enabled? If that is true, that proposal is rational, but if that is not true, I am oppositional to subversion of current adherence to systemic configuration.

Comment 4

[Tom Ritter [:tjr]]

Yes, this is specifically if Fingerprinting Resistance is enabled.

Comment 5

[Frederik Braun [:freddy]]

I don't think we should consider this "active" after 1 year of inactivity. Let's get this back to the queue.

Comment 6

[Thorin [:thorin]]

feel free to close this as a duplicate (or sub-item) to be addressed in Bug 1397996 (which is being worked on by Tor Project)