I'm getting very odd characters (001B in a block, which apparently is escape?) in vim when I enter a newline, and sometimes when I switch to normal mode.
You can see the result here:
What's odd is that it behaves normally in gvim/macvim/iTerm2 vim, but not gnome-terminal. I'm using base16-shell to get base16-ocean, and the colortest succeeds.
Here is my corresponding vimrc: