@sergy
Thanks for your reply - I do not have any third-party plugins or themes. I have “Community” themes turned off in Settings.
I noticed something interesting - if I open the “Help” Vault, the “Create New Zettelkasten Note” button works. The path in Setting in the Help Vault for “New file location” is “Obsidian”, whereas in my notes vault, the path for “New file location” is “/”.
I am on Mac OS 11.2.2 and the path where the Help Vault is stored is ~/Library/Application Support/obsidian/Obsidian Help.
The path to my notes vault is ~/Documents/Pers/Obsidian.
Not sure where to look next…
Thank you!