For the last several versions of jEdit, opening a text-file from a file manager
(such as Path Finder or muCommander) will start jEdit (assuming it's not already
started) with a blank window, but the text-file itself will not be loaded. But if
jEdit was already open, the invoked text-file will load into jEdit. This behavior
is entirely repeatable - in fact I haven't found a way to avoid it.