In both r26560 and r26561 the maximizer is no longer storing or recalling previously called inputs. It works fine with r26558 and before. I have not tried with r26559.
maximizerMRUList
is modified whenever the maximizer is called in r26558 and previous versions with whatever string was used for input. It is presumably read from to populate the UI drop-down menu. But that property is not modified on a maximizer call in r26560 or r26561, and the drop-down menu in the maximizer UI is populated with some simple defaults, for lack of a better descriptor, that never change.