Title pretty much says it.
A:
- copy an object
- paste
- try to navigate to target area by panning using middle button
Object is placed where you middle-clicked
B:
1. Start drawing a line or a segment of copper area
2. Pan using the middle button
Line / segment gets a point added where you middle clicked
For me this happens on MacOS, haven't tried in Win/Linux.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
I posted about this a while ago, it was suggested in that post to use right click instead of middle click.
Does the same thing, minus the unintended "click."