Debugger breakpoint problems with backticked class names

I have some simplespec (https://github.com/codahale/simplespec) tests that I'm attempting to debug. Unfortunately, the breakpoints I set within my tests are not triggering. Upon further inspection, the way simplespec test classes are named is tickling a bug in the debugging capabilities of the Scala debugger. I have a short object that displays the problem I'm encountering…

object Test {
  def main(args: Array[String]) {
    println(new Foo().foo)
    println(new Bar().bar)
    println(new Baz().baz)
    println(new FooBarBaz().fooBarBaz)
  }

  class `Foo` {
    def `foo` = {
      "Hello, Foo!" // Breakpoint #1, won't trigger
    }
  }

  class `Bar` {
    def bar = {
      "Hello, Bar!" // Breakpoint #2, won't trigger
    }
  }

  class Baz {
    def `baz` = {
      "Hello, Baz!" // Breakpoint #3, will trigger
    }
  }

  class FooBarBaz {
    def fooBarBaz = {
      "Hello, FooBarBaz" // Breakpoint #4, will trigger
    }
  }
}

As you can see, breakpoints within the classes with backticked names don't trigger. It doesn't appear that backticked method names make a difference. I'm seeing this in IDEA 10.5 (107.85) with version 0.4.1020 of the plugin.