Be on a note, scappling. Close Scapple. Reopen. You are looking at a new note, not the one you were working on.
I looked for a preference; couldn't find one.
Didn't like finding Options under File - so 1999. Maybe a Tools menu would be good idea, and matching to Scrivener? You have plenty of room, and items like Special Characters and Check for Updates could go there.
Something else I liked too, and had to find on an obscure menu; now can't find it

Ah. It was Merge. And Split. What great things to have, and really sold me on Scapple in that moment of discovery.
What a nice tool, that i am beginning to use in anger. Because it is natural. Should be the slogan for L&L, if Keith agrees

Clive