viper 350 lock/unlock confirmation chirps

One final question I’m hoping someone can answer.  I’ve had Viper alarms for a good 8 years now, and I’ve never had one that continues to

Once it’s unlocked, it would basically do nothing if I pressed the unlock button again. 

Same for the lock function, after the 5 or 10 seconds to miss the progressive arming, hitting the lock button would do nothing. 

This Viper 350 just starts over if I hit the lock button again, chirp and I can even go through the progressive arming stages. 

After talking with the installer, he mentioned that it is functionally properly and it does this because I have the optional 4 button remotes.  Does this sound right?