FULL PRODUCT VERSION :
java version "1.8.0_102"
Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
not relevant

EXTRA RELEVANT SYSTEM CONFIGURATION :
not relevant

A DESCRIPTION OF THE PROBLEM :
The javadoc of DateTimeFormatter describes:

  Symbol Meaning Presentation Examples
  ------ ------- ------------ -------
   F week-of-month number 3

But F is the aligned day of week in month, not the week-of-month.

Related: http://stackoverflow.com/a/40423047/829571


REPRODUCIBILITY :
This bug can be reproduced always.