If I could ask a favor, when you collect, please click the bug icon in the game for this report, and provide some specific details of both things in the bug report. We'll be able to match location, collector, time stamps, etc in the logs much better that way.
kevbob, I think I know what's happening. In the past couple of days I've noticed that the way partial stacks of meat are displayed has changed. Before, if you had a partial stack of meat in a pack slot, say 15, and you emptied a collector, you could see that the meat would divide itself into two stacks, 45 and 15, because the numbers appeared side by side. But lately the numbers have appeared superimposed on each other, so you would only see the 45 or the 15 even though you were actually collecting the full 60 pcs. I have had my bag open and observed that I was collecting the correct amount of meat even though it did not look like it. I keep forgetting to bug it, sorry.