[wp-trac] [WordPress Trac] #48763: Twenty Twenty: SmoothScroll is broken

[WordPress Trac]

#48763: Twenty Twenty: SmoothScroll is broken
-------------------------------------+-------------------------------------
 Reporter:  joostdevalk              |       Owner:  audrasjb
     Type:  defect (bug)             |      Status:  closed
 Priority:  normal                   |   Milestone:  5.3.1
Component:  Bundled Theme            |     Version:  5.3
 Severity:  normal                   |  Resolution:  fixed
 Keywords:  has-patch has-           |     Focuses:  accessibility,
  screenshots needs-dev-note commit  |  javascript, css
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Comment (by SergeyBiryukov):

 In [changeset:"46825" 46825]:
 {{{
 #!CommitTicketReference repository="" revision="46825"
 Twenty Twenty: Replace Smooth Scroll JS implementation with `scroll-
 behavior` CSS property.

 The JS implementation had multiple issues and did not work as expected.

 This change includes an accessibility enhancement by using `prefers-
 reduced-motion: reduce` media query property for users that don't want
 motion effects. For further explanation on this media query, see MDN
 documentation: https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-
 behavior#Accessibility_concerns

 Props audrasjb, melchoyce, joostdevalk, Anlino, mauteri, sergiomdgomes,
 littlebigthing, williampatton, netweb, andraganescu, joyously, acosmin,
 mukesh27, hareesh-pillai.
 Merges [46824] to the 5.3 branch.
 Fixes #48763, #48551, #48866.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/48763#comment:26>
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