[Webkit-unassigned] [Bug 238668] New: Adding ".stl" files to a <input type=file> transforms it into ".bmp"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238668

            Bug ID: 238668
           Summary: Adding ".stl" files to a <input type=file> transforms
                    it into ".bmp"
           Product: WebKit
           Version: Safari 15
          Hardware: Mac (Intel)
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sunny at sunfox.org
                CC: cdumez at apple.com, wenson_hsieh at apple.com

If a file input has an "accept" attribute with both ".stl" and ".bmp" file extensions (whatever the order):

    <input type="file" accept=".stl,.bmp">

Then, when selecting a file called "my-file.stl", it shows up as a "tempImageiHA7wr.bmp" instead.

- Input to test here: https://dev.sunfox.org/safari-stl/
- STL example file: https://dev.sunfox.org/safari-stl/cults-logo.stl

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