The following 'problem' (?) occurred in my game, playing the Prussian side. In late April 1757, Saxon Chemnitz, by now a Prussian depot, was invaded by the Bohemische Armee of Charles of Lorraine. It probably was conquered, although this event was never mentioned in the log. Neither did I receive any battle report. In early May, Frederick with the Elbe Armee enthusiastically tried to strike the inferior Austrian force, by then established in the region. But again, I did not receive any report of a battle. For the late May turn I again ordered Frederick to attack Lorraine, but again, nothing seemed to happen. No reports, no battle, no switch of area control (remained Saxon). The red coloured areas east and west of Chemnitz indicate that Frederick's army is unable to move there, but in the planning of the next turn I am not forbidden to move Frederick into one of these areas.
What is going on? it appears that the Austraians are in Chemnitz, hold the city, but appear to be invisibble to Frederick.
A bug?