As this pull request was merged into the 3.7 release branch, it means that the behaviour will be fundamentally different starting from release 3.7.22 of Vassal. Please see the PR for more details.
Yours,
Christian
Vassal 3.7.22 Released should fix this. See how here.
Please remember to check the solution to your problem - only OP can do that. It helps others find the solution to their problems.
Yours,
Christian