Comment 32 for bug 1993823

Thank you Jessica! Noting that very old XUL templates might behave a little strangely if cloned, since we're now several template-versions past XUL. While we do expect most XUL templates to work correctly, there has been a lot of changes to the reporter since then and some template elements might have minor issues like you saw.

The good news is that the new interface makes it much easier to find templates and recreate them or clone into the newer template version, and I can update the documentation to note that this is recommended for any very old templates.