Vim not displaying deleted text correctly in tiling WM

Question

I'm sorry if the question doesn't make much sense, but I really don't know how else to describe it. I'll do my best to clarify.

Let's say I have a text file containing the words

here is some text

If I were to place the cursor on the 'h' and press and hold x to delete the line (or any number of characters) it copies the last letter of the line over the rest of the text. If I were to delete the entire line by holding x it would then become

xxxxxxxxxxxxxxxxx

but I can't move the cursor past the first column on that line, so the text is properly deleted, it just doesn't display correctly.

This also only happens in tiling window managers. I have tested it in ratpoison, StumpWM, spectrwm, dwm, and i3. I use XFCE4 as my everyday desktop and have been looking into switching to a tiling one, but without vim I can't do that. I have no idea why this is happening either, which makes it that much worse.

.vimrc:
set nocompatible
set number
syntax on
set shiftwidth=2
set softtabstop=2  
set incsearch
set tabstop=2
set expandtab
set smartindent
set ruler
set wildmenu  
set relativenumber
set showcmd
set ignorecase
set smartcase
set laststatus=2
set mat=2
set showmatch
set so=999
scriptencoding utf-8
set enc=utf-8
set fileencoding=utf-8
set matchpairs+=<:>
set matchpairs+=/:/
"Key Bindings
noremap <Up> <Nop>
noremap <Down> <Nop>
noremap <Left> <Nop>
noremap <Right> <Nop>
inoremap <Up> <Nop>
inoremap <Down> <Nop>
inoremap <Left> <Nop>
inoremap <Right> <Nop>
"vim-latexsuite mappings
filetype plugin on
set grepprg=grep\ -nH\ $* 
let g:tex_flavor='latex'
set iskeyword+=:

Answer 1

I managed to figure it out guys. I looked at the help entry for the '-u' command and saw there was also a '-u NORC' option which only skipped the vimrc file, not plugins. When I ran it, the problem was gone meaning that the problem had to be in the RC file. The first thing I did was delete the three lines regarding the enconding, but that didn't change anything either. After I looked at ':scriptnames' I saw there was another vimrc being loaded at /etc/vimrc, which was an exact copy of the one in my home directory prior to the edits I made. After commenting out the entire file and removing the comments one by one, I managed to figure out it is the

set enc=utf-8

line that was giving me all the trouble. My guess is that xterm was not being run in utf-8 mode, which was causing problems when trying to display (or more accurately delete) characters. Thanks for you help guys!