Possibly a BUG with SELECT or CLONE?

I am a beginner of VASSAL-a great engine.
In module Valor&Victory 3.2.16 on Windows 7 (JAVA 8.0.111), when I select any unit(s) using left button, it not only selects the unit(s), but also copy it(them). I dont think CLONE works that way. AND on my other computer WIN10, to select, to copy(clone) and to move works separetely very well.