Opening an ical blob url crashes the app

[data-sync-user]

Trying to open a blob url with an embedded ical crashes the app ( but works on Safari ). Below is an example of a reduced testcase ( also hosted live here for quick testing ):

const ICAL_CONTENT = `BEGIN:VCALENDAR
    VERSION:2.0
    PRODID:-//Your Organization//Your Product//EN
    BEGIN:VEVENT
    UID:[email protected]
    DTSTAMP:20231010T090000Z
    DTSTART:20231010T090000Z
    DTEND:20231010T100000Z
    SUMMARY:Sample Event
    DESCRIPTION:This is a sample event description.
    LOCATION:Wonderland
    END:VEVENT
    END:VCALENDAR`
      .split("\\n")
      .map(s => s.trim())
      .join("\\n");

const blob = new Blob([ICAL_CONTENT], {type: "text/calendar;charset=utf-8"});
const blobUrl = URL.createObjectURL(blob);

const downloadLink = document.createElement("a");
downloadLink.href = blobUrl;
downloadLink.textContent = "Download iCal File";
document.body.appendChild(downloadLink);

You can also access the same code here live.

┆Issue is synchronized with this Jira Bug

[data-sync-user]

➤ Issam Mani commented:

I haven’t debugged further but I suspect that the SF thing we use only supports specific schemes. Will double check later.