Hi AoE4 Dev Team!
After researching Spice Roads from the House of Wisdom, the secondary resource from trade gets stuck to wood. It’s not possible to toggle to food from the Market.
This only happens after researching Spice Roads. Using Grand Bazaar and toggling between Food/Wood works just fine.
Grand Bazaar (+25% Secondary Resource from trade)
Spice Roads (+30% more gold from trade)