Lag on random drop

It may have been complete coincidence, but the server lagged for a couple of seconds right when my character got to a flower I had sent him to pick, I assumed the lag would be with the client so I clicked in the direction I wanted to go next and when everything caught up I noticed I hadn't picked the flower, so I went back and picked it and got a colourful autumn leaf with it. If it had been lag at my end then the animals would've flicked to their new positions and the flower would've been in my inventory. I don't know if this is all that relevant but it seems like possibly some large load for the server related to random drops.