I have just started another note only to be told that I already have a document called 'new notes'

Where the warning is fine, there is no indication as to what to do about it.
I presume that I can rename this note by typing over the title but how can I see the other 'New Notes'? or continue editing the other 'New Notes', or rename the other 'New Notes'. If I continue with this newer version will the older version be over-written.
There is no other clickable hot spot on the 'error bar' other than the close button ... which has closed the error message but left me uncertain as to what will happen next.
The new interface seems to be a little confusing in what you can do. An error message is good but not if all it does is cause confusion without offering up any solutions.