KoLConstants.maximizerMList is used to display the list of recent maximizer expressions in the maximizer frame. However, it does not respond correctly to updates to the maximizerMRUSize preference, which under some circumstances can cause the frame to get stuck reverting the list to the default list after any use. In particular, this can happen when a script (such as autoscend) sets the maximizerMRUSize to 0 and then later resets it to a positive value. (Presumably the specific trigger is the frame being opened for the first time while the preference is set to 0, but I did not verify this.)
maximizerMList is an instance of PartialMRUList, which extends ScriptMRUList. While ScriptMRUList.update() has code that correctly listens for changes to the relevant MRU size parameter, the Listener implementation in PartialMRUList.update() overrides it and does not handle updates based on the MRU size parameter. The best remedy is probably for PartialMRUList.update() to call super.update().
