Product Version = NetBeans IDE 8.1 RC2 (Build 201510122201)
Operating System = Linux version 3.16.0-44-generic running on i386
Java; VM; Vendor = 1.8.0_45
Runtime = Java HotSpot(TM) Client VM 25.45-b02

Reproducibility: Happens every time

STEPS:
  * Creates the following Java class : 
package org.lvaills.netbeans;

public class TestLineAfterComment {
    
    public static void main(String[] args) {
//        System.out.println("Hello World !");
int i;
i = 3;
    }
}

  * Select the lines "int i;" and "i = 3;"
  * Ctrl+i
  * Execute the action "Re-indent current line or selection"

ACTUAL:
  nothing happens

EXPECTED:
I expect to have the line "int i;" and "i = 3;" indented (with 8 spaces in that case).

Note that if I execute the action "Format (Source)" (Alt+Shift F) the lines are correctly indented.