Inner classes that implement interfaces not compiling

FULL PRODUCT VERSION :
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Darwin Brians-MacBook-Pro.local 13.1.0 Darwin Kernel Version 13.1.0: Thu Jan 16 19:40:37 PST 2014; root:xnu-2422.90.20~2/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
I have an public static inner class that implements an interface from my classpath. The compiler is complaining that the interface doesn't exist:

/Users/bpontarelli/dev/inversoft/cleanspeak/cleanspeak-webservice/src/main/java/com/inversoft/cleanspeak/webservice/action/content/item/Moderate.java:209: error: cannot find symbol
  public static class Response implements APIResponse {
                                          ^
  symbol: class APIResponse
  location: class Moderate
/Users/bpontarelli/dev/inversoft/cleanspeak/cleanspeak-webservice/src/main/java/com/inversoft/cleanspeak/webservice/action/content/item/Moderate.java:122: error: incompatible types: Response cannot be converted to APIResponse
    this.response = new Response(request.content, response.filterAction, moderation);

However, if I move the inner class to a top-level class in its own file and change nothing else, it works fine.

REGRESSION. Last worked in version 7u51

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
I can't reproduce in a small case. This does break in my project, which is a large application with 30 JARs on the classpath. Sorry I'm not more help.


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Move the inner class to a top-level class.