Ignore dos not work properly in neovim

[yagarea]

This is my config:

let g:indentguides_spacechar = '┆'
let g:indentguides_tabchar = '|'
let g:indentguides_ignorelist = ['text','vim','md']

but when I open some of ignored files, all tabs are replaced with ^I.

[metal3d]

It does work on my neovim... There isn't any weird char and ignore list is working.