Also happens in the help vault.
CMD+OPT+I gives me the following errors:
Error: EPERM: operation not permitted, open ‘/Users/frank/Library/Application Support/obsidian/Obsidian Help/Untitled.md’
app.js:1 Uncaught (in promise) Error: EPERM: operation not permitted, open ‘/Users/frank/Library/Application Support/obsidian/Obsidian Help/Untitled.md’
app.js:1 Error: ENOENT: no such file or directory, open ‘/Users/frank/Library/Application Support/obsidian/Obsidian Help/Untitled.md’
Just to assure you: I am able to save other new notes, I can take another screenrecording of this if you want me to.