Cant set time format in the chat plugin

If i enable showtime in the settings, the time remains unformatted like : 22 10 32 0232 whenever the format i set (for example h:i )
If i set a format with escape characters like :
G \h i \m\i\n the option is messed up, each time i save the settings it adds the escape \ and it becomes :
G \\\\h i \\\\m\\\\i\\\\n
then G \\\\h i \\\\m\\\\i\\\\n
Is there a problem with that option ?
thank you