Bug: vertical bar and plus don't work when keyboard is set to Polish Pro on Mac OS X

When I set keyboard to Polish Pro in Input Menu in International in  
System Preferences - SQL editor doesn't allow to enter  +  and  |   
characters (  =  and  \  work ) - nothing happens when I press one of  
those keys.
To use | or + I have to copy-paste them from other editor.
When I change keyboard settings to U.S. those keys work.

My OS: Mac OS X 10.5.3 ( same problem occurred on every 10.5 and some  
later 10.4 - not tested all 10.4 )
Language is set to: English
pgAdmin: 1.8.4 ( problem occurs since 1.8.2 - not tested earlier  
versions )

Best Regards,
Wiktor Latanowicz