QueryParser.parse(...) parses wrong the ".[@a=3 and @b=3 or @c=3]" XPath statement.

1. What I do:

import org.apache.jackrabbit.core.query.*;
...
QueryRootNode n1, n2;
String q1 = ".[(@a=3 and @b=3) or @c=3]";
String q2 = ".[ @a=3 and @b=3 or @c=3]";
n1 = QueryParser.parse( q1, "xpath", nsRegistry);
n2 = QueryParser.parse( q2, "xpath", nsRegistry);
System.out.println( n1.dump() );
System.out.println( n2.dump() );

2. What I expected to:
I expect the QueryParser parse the both cases with the same result.
So I expect to see on my console the same AQT dump (for the both n1 and n2 cases).

3. What have I got:
The QueryParser has parsed the q1 statement (in right way): 'OR' node has 2 operands, one of witch is 'AND' node with its 2 operands.
However the q2 statement is parsed as an 'OR' node predicate with only 1 operand; this one operand is 'AND' node, having in its turn all the 3 relation (as its operands).
The output is the following:
...
+ OrQueryNode
+ AndQueryNode
+ RelationQueryNode: Op: = Prop={}a Type=LONG Value=3
+ RelationQueryNode: Op: = Prop={}b Type=LONG Value=3
+ RelationQueryNode: Op: = Prop={}c Type=LONG Value=3
...
+ OrQueryNode
+ AndQueryNode
+ RelationQueryNode: Op: = Prop={}a Type=LONG Value=3
+ RelationQueryNode: Op: = Prop={}b Type=LONG Value=3
+ RelationQueryNode: Op: = Prop={}c Type=LONG Value=3

4. Resume:
I think the second case is parsed in a wrong way, because it's interpreted as tree operand 'AND' condition:
"@a=3 and @b=3 and @c=3".