Product Version: NetBeans IDE Dev (Build 1) March 21st
Java: 1.8.0_40; Java HotSpot(TM) 64-Bit Server VM 25.40-b25
Runtime: Java(TM) SE Runtime Environment 1.8.0_40-b25
System: Windows 7 version 6.1 running on amd64; Cp1252; en_US (nb)
User directory: C:\dev\Netbeans\user\dev
Cache directory: C:\dev\Netbeans\cache\dev

1. Open a yml file containing these lines:

- name: Change service start priority
  lineinfile:
    dest={{ processorBinPath }}/{{ processorAppName }}
    state=present
    backrefs=yes
    regexp="^# chkconfig: ([^ ]+) ([^ ]+) ([^$]+)$"
    line="# chkconfig: \1 {{ processorStartPriority }} \3"

2. Line "backrefs=yes" is flagged with an error annotation: "We had this mapping values are not allowed here"

I don't understand the message (it's not proper English). It's not clear whether the error annotation is a bug (the yml file looks valid) or whether something is genuinely wrong in which case the error message should be clarified.