In the follow ups to event 999951 "The Black Flag Army", Heiqi Jun is released and a war begins with the previous owner of colonial Tonkin. There is an issue with the resolution of this war, in that anyone with a Qing truce may take Tonkin in the decision treaty_of_tientsin_france.

Fortunately, there is a relatively easy fix to this, to add a flag to the country that experiences event 99951, and then to verify the flag in the decision.