I have a plugin that adds the variable #{spotify_track} as well as other Spotify variables. My status line looks like:

let g:tmuxline_preset = {
      \'a'    : ['#S', '#I'],
      \'b'    : '#W',
      \'x'    : ['#(mpc current)', '#{spotify_artist} #{spotify_status} #{spotify_track}'],
      \'y'    : '%H:%M',
      \'z'    : '#H'}

If I use :TmuxlineSnapshot to save this to a file and source it from Tmux, the status bar looks fine.

However, if I load up Vim, the status bar is overwritten, and the variables seem to disappear.

Is there a way to either fix this behavior or keep Vim from recreating the status bar?