First I'd just like to give kudos to the developers for making such an awesome game! I'm enjoying it very much!
So I was playing in hardcore mode (with controller) and noticed a bug when packing loaded logs.
When you have a log carriage and a short log trailer, you can pack the logs if the total sum of logs on truck and trailer is 4 or more. You can have 2 logs on truck and 2 logs on trailer and then pack either one (it also works 1/3).
After you pack one you can't pack the other, because only 2 logs are loaded but you can then unload the packed logs which turn into 4 loaded logs which means you can again pack the other 2 logs.
The type of truck doesn't matter I tried with 3 different trucks. I also tried with log carriage and medium log trailer and everything works as it should (no bug).
2 on truck
2 on trailer
pack the truck, can't pack the trailer
unload the truck, can pack the trailer
the same with other trucks and different number of logs