Windows 10 Pro 20H2
OS build 19042.746
Evernote v10.6.9
I was experiencing this issue with keyboard shortcuts too (Ctrl+B, Ctrl+Shift+B, Ctrl+E not working).
Downloaded Evernote v10.7.6 direct from the website and everything's working again.
Thanks for making speedy work of this fix, Evernote team. Well done!