Assert on second build of Android application with additional java class with native methods

I'm building android application with some additional java code. Java module produces jni interface header which should be compiled by cpp module, but I get assert in rulesapplicator.
First build ends fine, but next builds or deploys fail with the assert in rulesapplicator.cpp

Need to notice, that I have one native java method in this example. This triggers javac to produce additional jni c++ header with the proper declarations.

public class Test extends QtActivity
{
    public static native void testFunc(String test);
...
}