restarting during course calculation

I purchased the Garmin Fenix 8 from you last week. I’ve been a loyal user of the Fenix series for the past 10 years without any issues. However, today I noticed a problem.

When I go to Run activity (this happens in all activities) -> Navigation -> Round-Trip Course -> I set the distance -> choose the direction, the watch starts calculating routes. However, just before the calculation finishes, or right after showing the first route, the watch restarts.

My firmware version is 13.35.
I’ve tried restarting the watch and syncing it with Garmin Connect, Garmin Express and Factory/Hard Reset, but nothing helped.

Interestingly, if I set a shorter distance (e.g. 3 km), the route is calculated and displayed without any problem. But if I use the default 8 km distance, the watch crashes and restarts.

Can you help me understand what might be causing this? Is Garmin already aware of this issue and working on a fix?