Hm, are you sure all the settings are the same on both versions? Usually people miss a character in the character field. It helps if you copy/paste the characters from the widget and the on-line version into notepad or similar app, and compare them directly underneath eachother.
Let me know what happens,
The default character set in the Y! Widget is missing the '\' (backslash) character:
vvv Firefox vvv
^^^ Y! Widget ^^^
It is easily possible to add this back to achieve compatibility, but you lose the "reset to default" option.
If possible, it would be excellent to make the default character string compatible between PWM editions.
tool! Is has a "Why didn't I think of this" feel