[wp-trac] [WordPress Trac] #38850: Sticky positioning for a smoother scrolling experience

[WordPress Trac]

#38850: Sticky positioning for a smoother scrolling experience
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 Reporter:  iseulde      |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  4.8
Component:  Editor       |    Version:
 Severity:  normal       |   Keywords:  needs-patch
  Focuses:  javascript   |
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 Let's consider using sticky positioning to do the scrolling effect we
 currently have on the editor page. At the moment we use JS and listen to
 scroll events, which is not ideal. It may look slow and buggy under some
 circumstances.

 Browser support is looking good. It's already implemented in Firefox and
 Safari, and by the time we ship 4.8 it will be in Chrome (est. 31 Jan).
 It's under consideration for Edge and there's no support in IE. This is no
 big deal though, as we can just fall back to what we currently have.

 http://caniuse.com/#feat=css-sticky

 Note: Firefox now also gives a warning in the console about using JS for
 this:

 > This site appears to use a scroll-linked positioning effect. This may
 not work well with asynchronous panning; see
 https://developer.mozilla.org/docs/Mozilla/Performance/ScrollLinkedEffects
 for further details and to join the discussion on related tools and
 features!

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Ticket URL: <https://core.trac.wordpress.org/ticket/38850>
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