I used to do the same, with the exact piece of software, when I was a contractor for a big enterprise that didn't give me sh*t to do.
Even after asking multiple times for some assignments and integrating myself into the daily standups, manager meetings and made myself "part of the team" as much as possible, they didn't use me or my skills.
So naturally I went Eff that and just didn't care anymore. Whenever someone had an assignment for me to do, I'd get the job done in no time and go back to "busy idling"