Using Visual Studio Code as EDITOR e.g. with sudoedit

I am using Kubuntu 20.04. When I run sudoedit /etc/fstab, VS Code opens to a blank document and the CLI immediately returns (see details below). If I run export SUDO_EDITOR=nano, the document opens in the nano editor with the contents of /etc/fstab as expected. If I run export SUDO_EDITOR=/snap/bin/code, it once again opens VS Code with a blank document. What am I doing wrong? Or is this a bug? *** kevin@kevcoder00 ~ $ echo $VISUAL kevin@kevcoder00 ~ $ echo $SUDO_EDITOR kevin@kevcoder00 ~ $ echo $EDITOR /snap/bin/code kevin@kevcoder00 ~ $ sudoedit /etc/fstab [sudo] password for kevin: sudoedit: /etc/fstab unchanged