Nope, abduco adds it pretty seemlessly without getting in the way, but unfortunately it doesn't seem to handle mouse events which I use occasionally with vim.
I've been using abduco and neovim as my dev environment for the past month or so and am very happy with the setup. I don't rely on mouse events so didn't notice that missing. Whenever I log in local or remote I start a new session or attach to the existing one with `abduco -A nvim nvim`.
It's a really pretty awesome set up, but when I am primarily in terminal mode and have a lot of scroll back I want to yank from I frequently will reach for my mouse. Lack of mouse support has stopped me from using abduco consistently.
Seems like some solid software other than that, I'm glad there's an option that interferes so minimally.
I'm not sure if Neovim directly provides this functionality, though Neovim can be run inside a tmux session, and tmux sessions can run inside the Neovim terminal.