Playing England, attacked Scotland, France and Burgundy joined the opposite side, occupied Scotland, waited 6 years - can still get only some ducats from Scotland.
What happened? I have a OPM vassal on the continent, which was occupied by France but control was transfered to warleader Scotland so I doesn't count as full occupation. Guarded by 140k Frenchmen. Awesome. In the end they forced me to actually trade Calais for Scotland.
