[wp-trac] [WordPress Trac] #31196: Loading indicators for the Customizer preview

[WordPress Trac]

#31196: Loading indicators for the Customizer preview
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 Reporter:  celloexpressions  |       Owner:  ocean90
     Type:  enhancement       |      Status:  reviewing
 Priority:  normal            |   Milestone:  4.2
Component:  Customize         |     Version:  3.4
 Severity:  normal            |  Resolution:
 Keywords:  has-patch         |     Focuses:  ui, javascript
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Changes (by westonruter):

 * keywords:  needs-patch => has-patch
 * owner:   => ocean90


Comment:

 Replying to [comment:20 afercia]:
 > I'd check the spinner image used as background, I suspect this is not
 just an IE11 issue but it happens in all browsers depending on the
 hardware. If you have a powerful machine with a powerful GPU you won't
 probably notice performance issues, but on old machines without a GPU the
 spinner is always there.. spinning even if not visible. See screenshot,
 Chrome on an old machine: CPU at 97% is not just a "peak", it is always at
 97% :)

 Great insight!

 In [attachment:31196.8.diff]: Remove hidden background image when iframe
 loads to help with performance.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31196#comment:21>
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