1518631 - Dynamic changes to overflow-anchor should invalidate the scroll anchor

Status: RESOLVED FIXED

(Core :: Layout: Scrolling and Overflow, defect, P3)

Description

[Ryan Hunt [:rhunt]]

This isn't in the spec explicitly, and I'm not sure if Blink handles this either based on [1].

I've got a patch to fix this and a couple WPTs demonstrating the issue.

[1] https://bugs.chromium.org/p/chromium/issues/detail?id=787358

Comment 1

[Ryan Hunt [:rhunt]]

Attachment: Bug 1518631 - Invalidate scroll anchor container on changes to 'overflow-anchor' property and add tests. r?dholbert

I believe that changes to 'overflow-anchor' should invalidate the current
scroll anchor. This isn't in the spec, but there's an issue open for it [1].

[1] https://github.com/w3c/csswg-drafts/issues/3494

Comment 2

[Ryan Hunt [:rhunt]]

Chrome doesn't do this, so I don't think we need to do this for an initial release.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/24f969298ec5
Invalidate scroll anchor container on changes to 'overflow-anchor' property and add tests. r=dholbert

Comment 4

[Stefan Hindli [:stefan_hindli]]

https://hg.mozilla.org/mozilla-central/rev/24f969298ec5

Comment 5

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/14927 for changes under testing/web-platform/tests