Forerunner 745 stopped counting KMs/distance despite it counting pace/km very well

Hello all,

I did a long run consisting of 8.3 + 8.3 KM, in total close to 17KM.

My 745 was counting automated laps and when I did reach half my distance (8.3KM), I pressed LAP, and then it stopped counting distance. Incredibly, after the run, I can see the pace/km which clearly showed I did keep running but the 745 stopped counting KMs...

No idea what happened here. I did like 18 KM and it only counted 6.43 KM. So in reality it stopped counting even before my half way back home.

I can see in this forum Im not the only one having these issues and I dont know if I can trust the measurements on Garmin anymore.

Any clues or should I send my 745 back?