Why the change, if you don't mind me asking? Those tooltips telling you exactly why you were winning/losing a war were rather nice.
The tool tips are still accurate to the AI's views and the overall nature of the war, but the warscore value was redefined to make it function more fluidly. The 'bug' is that cities were too valuable in the warscore calculation in my original model, but I reduced them for the release (an element not included in ilteroi's hot fix). It'll be fixed in a later release.
G