Thank you for your report. Did you un-pin and re-pin the shortcut, or did you have to make some kind of edits to it? If you could detail the steps, that would be helpful.

I unpinned the Firefox shortcut from the task bar and expected it to be somewhere on my desktop. It wasn't so I pinned a new shortcut from the Firefox executable back to the task bar.

Thanks. I wonder why the old one stopped working? Strange!

I wondered if the old version had a different executable name or was installed in a different folder.

No, on further reflection, that could not be it because the executable was launched.

IDK.