vim as editor

Hello,

I am working with mutt since 3 month and for 97.4% I am realy happy with
it 👍 But there are the other 2.6% 😏 
I am using tmux to observe several accounts ... very good solution.
As editor I set a script that calls the vim-editor in a new tmux-window,
so I can jump back to my INBOX independently of creating some messages
in the background 👍 
But this solution works ONLY if I create a new message! If I want to
open a existing message in the background I can not jump back to the
INBOX because mutt is blocking till I close the vim editor.
In my settings I have the line:
    set editor='/home/schule/.config/mutt/bgedit-tmux.sh vim'
for calling the vim in a new tmux window.
Is there a difference how mutt calls the external editor when I create a
new message and when I only edit a existing message?

regards
HS

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