Dark Knight said:
This isn't a bug.
--> GD forum
In the case of Britain at the beginning of the Grand Campaign, or any other nation with a sizable navy, it is most definately a bug:
Navies under 1.03 aren't supposed to consume manpower, however simply start a new campaign as Britain or some other naval Power, disband your entire fleet, and then wait a day or two and your manpower jumps from -147 or so to +220 positive...thats because the "old" navies you start with haven't been changed to reflect the new manpower rule, new navies you build after game start will not <usually, although i hear there are some bugs> suck down manpower. That...is a bug
Also, as a personal note, since they readjusted the manpower rules in the patches, they might as well have readjusted army sizes or soldier POPs, so that you don't have to start every game doing this manually yourself, its a pain in the a**, and it needs fixing.