[OSM-newbies] JOSM - Having to select the way when splitting

[Rick Collins]

In JOSM (v 401) when I try to split a way, I am finding the odd 
occurrence of the error message, "There is more than one way using 
the node(s) you selected.  Please select the way also."

But I am totally sure there is only one way involved.  This happens 
either with a single node selected or multiple nodes.  But either 
case often works just fine as well.  I don't understand what is 
different between the split working or getting the error message.

I also see inconsistent behavior on adding to a way.  Sometimes the 
way is extended, other times a new way is started.  What is 
different?  I see this at either end of the way.

Rick Collins