1. If the Breakpoint is at the last node in the flow, it does not stop
2. In some cases it does stop but it does at the end of the action. It should stop before the node makes the Action
I am very sorry for the late reply, but I was ill for the last couple of days!
No problem about multiposts. The webhost can get slow sometimes. I have already contacted them about this.
Regarding breakpoints and logging, this is just how it currently works for a totally technical reason :), but I will try to make it work like you suggest since it makes more sense.