Commanding duplicants to harvest mealwood results in the animation of harvesting and everything, but in the end, no meal lice drops. The food total doesn't increase after harvesting, the refridgerator doesn't show food. The duplicants don't eat any meal lice neither. In other words, the mealwood grows fine, but there is no actual harvest. The video "OxygenNotIncluded_2017-03-17_15-17-30-22.mp4" shows the small clip of a mealwood being harvested and producing no food. This might be me not fully understanding the mechanics behind the situation, so let me know why this is happening if there's a non-bug solution.
Entire Colony Mapping:
Plant a Mealwood Seed and Harvest.