Multiple non Javascript-native instance variable declarations per-line don't work

Cappuccino appears to have a problem with having instance variables declared in a class where the type is non Javascriopt-native and you specify multiple variable declarations per line. For example:

@implementation NavigationBar : CPView
{
    int _type, _fieldPadding;
    id  _backButton, _forwardButton;
}
.
.
.

will result in a 'backButton not defined' error the first time backButton is referenced at runtime. There are no problems accessing either type or fieldPadding, which are int's. It also doesn't appear to matter whether the offending variables are declared as 'id's or some other non Javascript-native type.

Changing this to:

@implementation NavigationBar : CPView
{
    int _type, _fieldPadding;
    id  _backButton;
    id _forwardButton;
}
.
.
.

alleviates the problem.