[antlr-interest] ANTLRWorks interpreter doesn't understand syntactic predicates?

[Elijah Epifanov]

Hi, it looks like ANTLRWorks doesn't understand syntactic predicates, it 
shows following tree
 >>>>
<grammar nested>
|
--a
   |
   --FailedPredicateException(a,{synpred1}?)
<<<<

for the following grammar
 >>>>

grammar nested;

a : (e ';' )=> e ';'
    | e '.'
    ;

e : ('(' e ')' e)=> '(' e ')' e // type cast
    | '(' e ')'             // nested expression
    | ID
    ;

ID       :
                  'a'..'z' + ;
<<<<

when interpreting following text
 >>>>
asas;
<<<<

starting at rule 'a'

Debugger works fine and shows the parse tree correctly (with one branch 
with backtracking)

Is this a bug?