While not technically a bug and not a huge performance issue, this could be trivially fixed.
The problem: Every call to Enum.values() creates a copy of the internal array of values since it could be modified by the caller. As a consequence, things as iterating over all values create large numbers of objects to be collected by the GC. This is especially noticeable for EnumFacing.values()

The fix: Simply store the value array in a static variable.