Ant gathering bug

This ant started to climb the plant at the same time as the last ant that gathered the last gatherable leaf and the ant that had nothing to harvest started to move really really slow. She did the same gathering animation, but slower. 20190723192240_1.jpg
P.S. It was quite funny to watch her climb the plant.
I mean, this can happen a couple of times I wouldn't really call this a “bug” more like kinda annoying. All mostly happens the ant will just climb back down and just go to another plant. This can happen more often when you have lots of ants climbing a plant.