it's not dripping, as you can see in the video, all the time the black color is active, the blue head (Left) is not dripping at all, as soon as it switches color, it primes itself and pushes out a little amount of plastic, then it starts moving.
Here's what I think is happening, I have retraction configured for .2mm, so when it switches heads, it pulls back the plastic .2mm and then wait. When the head becomes the active one again, Cura primes the head to bring it back into operation but it seems to push more than .2mm of plastic. What is the value it uses to prime the head? Is this configurable? Or should it be the same as the retraction?
Why doesn't it wait to be over the object before doing this priming?
The nozzle is a J-Head .34