Bug 240954

Summary: <object> fails to load same PDF twice
Product: WebKit Reporter: Joe Woods <woods>
Component: PDFAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: achristensen, beidson, thorton, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   

Description Joe Woods 2022-05-26 07:27:05 PDT 
I believe this is new in Safari Technology preview, but I could be mistaken:

* Insert an `<object>` into the DOM, loading a PDF by the data attribute.
* Remove that `<object>`.
* Insert another `<object>` into the DOM, loading the same PDF by the data attribute.

All subsequent times the object should be loaded, the embedded PDF viewer will not work.

I have put together a minimal reproduction here: https://safari-pdf-issue.unstable.email/

Thanks!
Comment 1 Alexey Proskuryakov 2022-05-30 19:38:32 PDT 
This reproduces for me with macOS 12.5 beta.

Looks like <object> gets a zero length PDF every time except the first load.

      document.getElementById("add").onclick = function () {
        const pdf = document.getElementById("pdf");
        if (pdf) {
          pdf.parentNode.removeChild(pdf);
        }

        const newPdf = document.createElement("object");
        newPdf.setAttribute("data", "/dummy.pdf");
        newPdf.setAttribute("type", "application/pdf");
        newPdf.setAttribute("id", "pdf");

        document.body.appendChild(newPdf);
      }
Comment 2 Radar WebKit Bug Importer 2022-06-02 07:28:13 PDT 
<rdar://problem/94284319>