Why does this situation occur

Hi, I use a odrive to control two motors that are structurally coupled. When I change the motor speed, I wonder why the current changes first decrease and then increase, instead of directly increasing or decreasing to a relatively stable value shown in the graph.
I’m sorry, the image is not very clear.

Hi! Can you give some more information as to what’s actually going on here? Which ODrive is this? Are both motors being controlled? Some pictures etc would be great if possible.