[Webkit-unassigned] [Bug 215774] New: GIF support regression on iOS 14 beta 5

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215774

            Bug ID: 215774
           Summary: GIF support regression on iOS 14 beta 5
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: iPhone / iPad
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fdoxyz at hey.com

This was tested on iOS 14.0 (18A5351d) beta 5

Browsing a website that presents the following GIF we're not able to see anything other than the background color of the element

https://res.cloudinary.com/hkyugldxm/image/fetch/s--tWG33PgR--/c_imagga_scale,f_auto,fl_progressive,h_420,q_66,w_1000/https://thismmalife-images.s3.amazonaws.com/i/nzb6iyu6cpodsele1fqe.gif

The `img` is presented in HTML as:

<img src="https://res.cloudinary.com/hkyugldxm/image/fetch/s--tWG33PgR--/c_imagga_scale,f_auto,fl_progressive,h_420,q_66,w_1000/https://thismmalife-images.s3.amazonaws.com/i/nzb6iyu6cpodsele1fqe.gif" width="1000" height="420" style="background-color:#dddddd;" class="crayons-article__cover__image" alt="Cover image for BJ Penn deals with GSP's low kicks like they are nothing ����">

This is not a problem in iOS 13.6.1 (17G80). Could this be a regression on GIF support?

The web page that has this GIF also contains another GIF that is presented correctly, which makes the problem a bit more odd. It can be seen here: 

https://www.thismmalife.com/taliashaw_962/a-rose-namajunas-flying-arm-bar-move-4pmo

Thank you in advance for the help.

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