Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi, I also have this problem in the new Outlook. The only way I've been able to get around it is by changing settings to group by conversations (newest on top).
Settings > Mail > Layout > Message organization > Show email grouped by conversation > Newest on top.
I prefer show email as individual messages, but grouping by conversations does solve the issue of the email disappearing to draft folder. It stays in the inbox with the message you are replying too.