Hi Everyone,
We're randomly missing +New, Edit & Delete buttons on Quote Ribbon.

The buttons were showing last week. No customization's have been made in the meantime.
"Read-only in mobile" option is unchecked for the Quote entity.
+New, Edit & Delete buttons are still showing for other entities:

Would anyone know how that could happen, and what to do to make the buttons visible again?
Thank you.
Kind regards,
Ian