The problem arises after doing some work with the 8X8 combine then going from one farm to another; working for people from the MarketPlace
I don't have this issue working on my own farm.
By the way - I always click the 'SAVE icon' before I exit to work on the next farm and it doesn't help, if anything at all.
I have uploaded the two images below, posted them here, and I am STILL ENQUEUEING THE NEXT FARM.
Look at the XP count, it's still the same.