Light colorscheme issue causing black background when scrolling down using J

Question

colorscheme leya
set background=light

whole .vimrc https://gist.github.com/francium/e29aa1600abd158fe08b34218e1f3bd6

Only happens when you scroll down using j

Tried it with another light theme, wikipedia -- Same issue

Leya -- https://github.com/marlun/vim-starwars

Wikipedia -- https://github.com/mtglsk/wikipedia.vim

EDIT:

1. Just tried without any .vimrc, same result.

2. Toggling NERDTree fixes the issue

Answer 1

The following configuration fixed OP's issue:

set t_ut=

This says to Vim to use the current background's color to clear the screen.

Related answer: https://stackoverflow.com/a/15095377/2558252