Using New Outlook on Windows for professional communication and productivity
My workaround for this was creating a Quick Step that does both of these actions. It appears in your taskbar at the top just like the Delete button so you hit it once and it deletes the email and marks it as read.
To create the Quick Step go to Settings -> Mail -> Quick steps and create a new quick step. I just added the "mark as read" and "move to" "Deleted items" actions and that was it.