I am on build 0.7.10.4-797c8f3-sw
Playing as folktails.
I have noticed that when beavers change tasks, specifically to or from hauling tasks such as cutting a tree and then hauling the log, or picking carrots and hauling carrots, they get to move for about 0.5s at their pre-hauling movement speed, and then continue on at their hauling movement speed.
The same happens when an item is dropped off - they are slow for about 0.5s and then speed up.
I find it visually jarring, and would swear that this sort of speed stagger never happened before 0.7