Ok just repair this. I reset combine use small R button in shop.
I can confirm this. I had the same issue with Tucano and another time with Disco 2750 and cutting grass.
Only solution for me was to reset Disco 2750 or Tucano.
Here I have a savegame for the developers to replicate the issue. Just jump into the Tucano, X, B, V, swath and cutt the field #18.