Yes, that's exactly what its doing. Do you have it displaying 'elapsed' time? Check your Strava activity - 1h29m02 moving vs. 3h17m41 elapsed. I know you don't upload from your head unit, but it definitely has similar numbers. Various software will calculate 'moving' differently, so its possible your computer only gave you 83 minutes 'moving', but you'd better believe it knows how to subtract start and end points and calculate the total time of the activity (which is used to calculate the metrics you care about).
You can chose not to care about this, but I would just hazard to suggest the actual stress of doing a riding pub crawl is closer to what you were assigning based on feel.