Save as draft/Save button for message templates created on the fly

When you select a contact, 'Email' from the action bar, Choose a new template > build new, work on the design for a bit but then decide to bail on sending it now or scheduling it for later, there is no draft saved anywhere. Nor the option to save the email from within the editor. Unless specifically originally designed under the Messages > Email builder tab, there is no save button. Loom: https://www.loom.com/share/b5a54ec80ee6444990de06efd27fddff