This happens to me all the time when using Treemap view, which otherwise would be my favorite view. To clear the problem, it’s usually sufficient to use Command-Tab to switch to another application and then Command-Tab to switch back. But the problem reoccurs every time I choose another note, making Treeview pretty much unusable.
My document has fewer than 100 notes and is less than 400 KB. Restarting the Mac and making sure that unnecessary applications are not running doesn’t help.
The problem occurs with Treemap, not with Outline or Map. The 3 attached graphics show all 3 views with the same note selected.
The note that is shown in Treemap is one that I selected some time before. Selection of the note in the righthand pane (but not usually display of its contents) happens without a hitch the first one or two selections, but then the system seems to get overwhelmed.
I find it counter-intuitive, but probably useful for finding a fix, that Command-Tabbing to another app should clear the problem.
