In one version of VIM that I run, when I hit the "tab" key in insert mode, it indents the whole line, regardless of the cursors position in the line.
Here is what I believe to be the only modified parts of the config, however I can include more as necessary (the whole file is 296 lines so I'll need to cut it down).
set nowrap
set shiftwidth=4
set expandtab
set autoindent
set tabstop=4
filetype plugin indent on
inoremap <tab> <c-o>>>) you should following the instructions in this question and edit your question with what you'll find. – statox Oct 15 '18 at 08:00