Bug 219324 – REGRESSION (Safari 14): background-attachment: local does not work

• Status: RESOLVED
• Resolution: FIXED
• Component: CSS

[sunder liu]

It seems that background-attachment:local is not working on Safari 14.0.1 (macOS Big Sur)

I tried on this demo from MDN

https://interactive-examples.mdn.mozilla.net/pages/css/background-attachment.html

for Safari 14.0.1, background-attachment:local and background-attachment:scroll are working the same.
but it works right on Chrome (macOS Big Sur)

[Alexey Proskuryakov]

Thank you for the report! Could you please confirm if this worked with older versions?

[sunder liu]

Yes, it works on Safari 13.1.1 (Catalina 10.15.5)

(In reply to Alexey Proskuryakov from comment #1)
> Thank you for the report! Could you please confirm if this worked with older
> versions?

[Radar WebKit Bug Importer]

<rdar://problem/71808922>

[George PLANT]

I can confirm this bug exists. 

Please see attachments

[George PLANT]

Created attachment 422372 [details]
background-attachment: local not working

See class css .strategy__data for the background-attachment: local. 

When scrolling horrizontly the background does not move.

[lvschie]

Please assign someone to this issue, it should be fixed after a year.

[Simon Fraser (smfr)]

Created attachment 448549 [details]
Patch

[Simon Fraser (smfr)]

Note to self: might need a separate fix for the root.

[Simon Fraser (smfr)]

Created attachment 448556 [details]
Patch

[Simon Fraser (smfr)]

Created attachment 448559 [details]
Patch

[Bramus]

Possibly related: https://bugs.webkit.org/show_bug.cgi?id=181048

(The listed workaround in comment https://bugs.webkit.org/show_bug.cgi?id=181048#c6 stopped working in iOS15)

[EWS]

Committed r287757 (245820@main): <https://commits.webkit.org/245820@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 448559 [details].