I'm not sure why this started to happen but recently vim seems to have begun autowrapping lines when in insert mode. It's pretty annoying.
I use the following modules
'vim-ruby/vim-ruby' 'rodjek/vim-puppet' 'romainl/Apprentice' 'plasticboy/vim-markdown'
I also have the following set
set wildmode=longest,full set textwidth=80 set autoindent
It pretty much happens in all files so filetype seems to not matter. The full vimrc can be seen here https://pastebin.com/1kpUmXFd