macOS: How to disable "Check Spelling" in Bitwarden app?

I’m using Bitwarden on macOS and unfortunately the check spelling function of the OS is activated for the notes section of entries. However, the last thing I want is macOS messing around with my entries. I was unable to find the familiar “Edit > Spelling and Grammer” menu item to disable this behaviour.

Is there a way to disable this in Bitwarden?