My 2014 never did this. My 2015 clock hasn't acted up yet. After several months the clock would drift off a minute or two but that's about it. The analog clock is suppose to be synchronized to the MFA. Any time drift would be from three areas:
1. mechanical drag from the internal gears and/or stepper motor by lack of lubrication or gear wear. This would be a gradual time drift and repeatable. All mechanical and analog quartz clocks do this.
2. poor electrical connection somewhere between the analog clock and the MFA. This seems more plausible as the clock randomly stops and then resets itself. I'll preform a simple experiment. I'll play with the clock reset buttons and throw the clock off. I'll leave it like this for a few days. As far as I know, the clock will not reset itself. I will have to reset it.
3. Intermittent low battery or some kind of power disruption. When the battery is low or disconnected only two items are affected, analog clock will reset to a default time (12pm?) and trip odometer will reset to zero.
Analog clocks look nice but they are a PITA. The mechanical parts will wear out and eventually VW will quit stocking replacements. I had a nice 1978 Volvo 260 GLE with an analog clock. It ran well for 6 to 7 years then died. By that time the clock wasn't worth the money, time, and effort to take the dash apart and replace it.