sinatra bug? expectation mismatch?

gistfile1.txt

Code (async sinatra + rack)
...
      aget "/api/v1/inputs/:id" do |*args|
        # get a particular input
        @logger.info args
        @logger.info params
      end # aget "/api/v1/inputs/:id"

Output (Sinatra 1.0) - AND CORRECT ACCORDING TO MY EXPECTATIONS
I, [2011-03-22T16:28:23.282940 #13097]  INFO -- : ["1234"]
I, [2011-03-22T16:28:23.283132 #13097]  INFO -- : {"id"=>"1234"}

Output (Sinatra 1.1)
I, [2011-03-22T16:28:14.096929 #13086]  INFO -- : ["1234"]
I, [2011-03-22T16:28:14.097048 #13086]  INFO -- : {}

Output (Sinatra 1.2)
I, [2011-03-22T16:30:28.462613 #13227]  INFO -- : ["1234"]
I, [2011-03-22T16:30:28.462778 #13227]  INFO -- : {}