I'm using uxterm and vim with the following .vimrc: https://github.com/dbrgn/dotfiles/blob/master/.vimrc
When I open a file in vim and don't push any key, colored text is rendered using bold font and the Powerline status line doesn't use any colors.
As soon as I push a key (e.g. by switching to insert mode, moving the cursor or pressing EscEsc), the syntax highlighting becomes correct and the Powerline colors show up.
This behavior isn't limited to Python files, it also happens with .txt files which don't use any syntax highlighting. Is this a bug or a misconfiguration in my .vimrc?
Edit: I tried the same thing even with a .vimrc that only contained "syntax on", nothing else. Even then the syntax highlighting colors changed after pressing a key for the first time. This must be either a bug or a missing config variable.