In Odoo 13 we were able to save our mail templates using raw HTML (by keeping the editor in the HTML view while saving). This would surpass any styling that the editor would automatically add to the mail template.

In Odoo 15 however, when I try to save an edited template while in the raw HTML view, no changes get saved. If I switch from HTML view to the normal editor view before saving then the changes are saved as normal. Because of this, I can no longer surpass the styling changes that the Odoo html editor adds on top of my mail templates.   

Is there a way for me to still get my desired result? Am I perhaps doing something wrong?