I updated EasyBlog from 5.0.42 to 5.0.44.
On the changelog of 5.0.43, I found "Users are no longer able to update others' post template."
So I tested, but it seems that front-end users are still able to update others' global template.
Will you please check if it's working expectedly on your end?
FYI: I had reported the issue on the ticket below:
https://stackideas.com/forums/acl-profile-change-template-no-is-not-working