next does not work properly in jdb

jdb, if next is applied, skips next block if there is 'if', 'while' or any other blocks after current line of execution.

To reproduce:

public class test {

    static String fnCall(String str) {
        return str;
    }

    public static void main(String[] argv) {
        String atr = fnCall("test this");
        if (atr.indexOf("th") != 0) {
            System.out.println ("\"th\" is inside the string");
        } else {
            System.out.println ("\"th\" is not inside the string");
        }
        atr = fnCall("test this");
    }
}


Cammands:
stop in test.main
next

Initializing jdb...
> stop in test.main
Deferring breakpoint test.main.
It will be set after the class is loaded.
> run
run test
>
VM Started: Set deferred breakpoint test.main

Breakpoint hit: thread="main", test.main(), line=10, bci=0
  10 String atr = fnCall("test this");

main[1] next
"th" is inside the string
main[1]
The application exited

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