Copy e-Mail as template from one user to other user

Mautic 5.0.4
i have a multi user instance. All user can access the mails to use mails as templates from others for himself by copying the mail.
Now user2 wants to copy a e-mail from user1 to use it as template. But still the signatur is taken from user 1 (instead of user2, the new author of the mail).

How can i it switched?

Are you using the signature token?
That is rendered based in the sender identity.

Testet something and found out, that mautics {signature} token always takes the standard signature in the preview (not the user signature)
What do i have to change, that in the preview the personal signatur of the user come?

Maybe it depends with the rights in the roles (multi user instance)