[wp-trac] [WordPress Trac] #36378: Srcset download 2 images with one request.

[WordPress Trac]

#36378: Srcset download 2 images with one request.
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 Reporter:  adam.radocz        |       Owner:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Media              |     Version:  4.4.2
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:  performance
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Comment (by adam.radocz):

 I made a video with a clean wordpress in a different pc. When I tried to
 reproduce the bug with only one image, I also couldn't as you. But when I
 uploaded a second image the bug appeared. I guess the problem is the
 wordpress resize the theme's framework when the page is completely loaded,
 as you can see at 6:30 in the video for one moment, and both the two
 images are downloaded for the two different viewsport.

 Here is the video: [https://youtu.be/d_PES0DM18Y]

 Replying to [comment:3 joemcgill]:
 > Hi @adam.radocz,
 >
 > I'm not able to reproduce this with a clean version of the Twenty
 Sixteen theme (which appears to be what you're using in your screenshot).
 Is it possible that you have any other plugin enabled that would be
 modifying the way images are loaded (e.g. a lazy loading plugin maybe)? I
 suspect there's something beyond the markup/browser causing this issue
 because in the screenshot shows that an "other" source initiating the
 double download, and not the HTML markup itself.
 >
 > If you can replicate the issue again with a clean install of WP and one
 of the default themes with no plugins activated, that would be helpful.
 >
 > Thanks,
 > Joe
 >

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Ticket URL: <https://core.trac.wordpress.org/ticket/36378#comment:4>
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