958792 - Empty dialog becomes zombie compartment after window.open

Status: UNCONFIRMED

(Firefox :: Tabbed Browser, defect)

Description

[Kevin Cox [@kevincox:matrix.org]]

When the following dialog is opened with `window.open` or `window.openDialog` then closed.  It's compartment remains alive.

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>

<dialog
	xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
	xmlns:html="http://www.w3.org/1999/xhtml"
	>
	<script type="text/javascript"></script>
</dialog>

Opened like:
window.open("chrome://autosizer/content/test.xul", "test", "chrome")
window.openDialog("chrome://autosizer/content/test.xul", "test", "chrome")

However, if it's opened in a browser tab it doesn't hang around when closed.

The script element is necessary although it also works with an external (possibly empty) script.