When I set, for example, main class to something, containing non-latin symbols, the automatically fetched APP_NAME missing all the Unicode symbols from class name.

{appResources=RelativeFileSet{basedir:/tmp/testBundlerWorkDir37057704764062970/jars, files:[testFxAppWithUtil.jar]}, mainJar=RelativeFileSet{basedir:/tmp/testBundlerWorkDir37057704764062970/jars, files:[testFxAppWithUtil.jar]}, classpath=testFxAppWithUtil.jar, applicationClass=testapp.Апп2}

here the bundle name is just "2"