Freeciv

1) Change "Surgical Strike Building" action in granary ruleset to a "Surgical Strike Production" action
2) Start a game with two players / clients
3) Setup "Surgical Strike Production" situation in editor. Also make sure that the target city has non-zero production store
4) Do the "Surgical Strike Production"
5) Check in the victims client what is the current production store in the targeted city -> should show zero, but shows actually unchanged value
6) Note also what is the prod/turn of the city
7) "Turn Done" on both clients
8) Observe the city in victim's client again -> shows just single turns worth of production in the store, indicating that it was added to zero, not to previous production store value