retitle 839112 Please revert to previous default settings thanks
I also consider this change of defaults (the "mouse=a" change, at least) a bug and would like to have it reverted. It is a very disruptive change; to me, it was a sudden "WTF?! Pasting text from another terminal no longer works!".
If, on the other hand, this is going to stay, users definitely need to be warned about this change when upgrading the package. Furthermore in that case, /etc/vim/vimrc needs updating. It currently says (and has said for years), among other things:
" The following are commented out as they cause vim to behave a lot " differently from regular Vi. They are highly recommended though. (...) "set mouse=a " Enable mouse usage (all modes)
It should instead say something to the effect of mouse usage being enabled for all modes by default despite it being very differently from Vi, and how to disable it.
Ulrich