On Windows environment, jansi-<version>.dll is created in AppData folder when JBoss CLI every start-up time. However, it is not deleted at CLI shutdown time.
By repeating JBoss CLI start and shutdown, jansi-<version>.dll file is increasing in AppData folder as below screenshot.
This issue only affects Windows environment, it can not reproduce on Linux.
I created new issue for the actual root cause in hawtjni: https://github.com/fusesource/hawtjni/issues/56