STR:
  - Go to https://mozilla.github.io/pdf.js/web/viewer.html
  - Click on "Open File" and open a pdf

The `Download` button and the `Current view` one just disappear.
I can reproduce this bug with Firefox nightly, Chrome stable and Epiphany on debian.
}
      const { origin, protocol } = new URL(file, window.location.href);
      
      
      
      
      
      
      if (origin !== viewerOrigin && protocol !== "blob:") {
        throw new Error("file origin does not match viewer's");
      }
    } catch (ex) {
      PDFViewerApplication.l10n.get("loading_error").then(msg => {
        PDFViewerApplication._documentError(msg, { message: ex?.message });
      });
      throw ex;
    }
  };
}
async function loadFakeWorker() {
  if (!GlobalWorkerOptions.workerSrc) {
    GlobalWorkerOptions.workerSrc = AppOptions.get("workerSrc");
  }
  if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("PRODUCTION")) {
    window.pdfjsWorker = await import("pdfjs/core/worker.js");
    return;
  }
  await loadScript(PDFWorker.workerSrc);
}
async function initPDFBug(enabledTabs) {